Shorten processed image filenames

Fixes #12688
Fixes #12656

111 files changed, 77 insertions, 73 deletions

diff --git a/common/hashing/hashing.go b/common/hashing/hashing.go
index 42194fd4d..70aa74ecd 100644
--- a/common/hashing/hashing.go
+++ b/common/hashing/hashing.go
@@ -27,7 +27,7 @@ import (
 )
 
 // XXHashFromReader calculates the xxHash for the given reader.
-func XXHashFromReader(r io.ReadSeeker) (uint64, int64, error) {
+func XXHashFromReader(r io.Reader) (uint64, int64, error) {
 	h := getXxHashReadFrom()
 	defer putXxHashReadFrom(h)
 
diff --git a/common/hashing/hashing_test.go b/common/hashing/hashing_test.go
index e059b3da8..09286c035 100644
--- a/common/hashing/hashing_test.go
+++ b/common/hashing/hashing_test.go
@@ -17,6 +17,7 @@ import (
 	"fmt"
 	"math"
 	"strings"
+	"sync"
 	"testing"
 
 	qt "github.com/frankban/quicktest"
@@ -32,6 +33,30 @@ func TestXxHashFromReader(t *testing.T) {
 	c.Assert(got, qt.Equals, uint64(7148569436472236994))
 }
 
+func TestXxHashFromReaderPara(t *testing.T) {
+	c := qt.New(t)
+
+	var wg sync.WaitGroup
+	for i := 0; i < 10; i++ {
+		i := i
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			for j := 0; j < 100; j++ {
+				s := strings.Repeat("Hello ", i+j+1*42)
+				r := strings.NewReader(s)
+				got, size, err := XXHashFromReader(r)
+				c.Assert(size, qt.Equals, int64(len(s)))
+				c.Assert(err, qt.IsNil)
+				expect, _ := XXHashFromString(s)
+				c.Assert(got, qt.Equals, expect)
+			}
+		}()
+	}
+
+	wg.Wait()
+}
+
 func TestXxHashFromString(t *testing.T) {
 	c := qt.New(t)
 	s := "Hello World"
diff --git a/hugolib/hugo_sites_multihost_test.go b/hugolib/hugo_sites_multihost_test.go
index 004da351d..ce3944a38 100644
--- a/hugolib/hugo_sites_multihost_test.go
+++ b/hugolib/hugo_sites_multihost_test.go
@@ -203,9 +203,9 @@ title: mybundle-en
 	b.AssertFileExists("public/de/mybundle/pixel.png", true)
 	b.AssertFileExists("public/en/mybundle/pixel.png", true)
 
-	b.AssertFileExists("public/de/mybundle/pixel_hu8aa3346827e49d756ff4e630147c42b5_70_2x2_resize_box_3.png", true)
+	b.AssertFileExists("public/de/mybundle/pixel_hu8581513846771248023.png", true)
 	// failing test below
-	b.AssertFileExists("public/en/mybundle/pixel_hu8aa3346827e49d756ff4e630147c42b5_70_2x2_resize_box_3.png", true)
+	b.AssertFileExists("public/en/mybundle/pixel_hu8581513846771248023.png", true)
 }
 
 func TestMultihostResourceOneBaseURLWithSuPath(t *testing.T) {
diff --git a/hugolib/image_test.go b/hugolib/image_test.go
index 637956b3b..7dcd9fc26 100644
--- a/hugolib/image_test.go
+++ b/hugolib/image_test.go
@@ -72,22 +72,20 @@ SUNSET2: {{ $resized2.RelPermalink }}/{{ $resized2.Width }}/Lat: {{ $resized2.Ex
 
 	b.Build(BuildCfg{})
 
-	b.AssertFileContent("public/index.html", "SUNSET FOR: en: /bundle/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_resize_q75_box.jpg/200/Lat: 36.59744166666667")
-	b.AssertFileContent("public/fr/index.html", "SUNSET FOR: fr: /bundle/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_resize_q75_box.jpg/200/Lat: 36.59744166666667")
-	b.AssertFileContent("public/index.html", " SUNSET2: /images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_123x234_resize_q75_box.jpg/123/Lat: 36.59744166666667")
-	b.AssertFileContent("public/nn/index.html", " SUNSET2: /images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_123x234_resize_q75_box.jpg/123/Lat: 36.59744166666667")
+	b.AssertFileContent("public/index.html", "SUNSET FOR: en: /bundle/sunset_hu13235715490294913361.jpg/200/Lat: 36.59744166666667")
+	b.AssertFileContent("public/fr/index.html", "SUNSET FOR: fr: /bundle/sunset_hu13235715490294913361.jpg/200/Lat: 36.59744166666667")
+	b.AssertFileContent("public/index.html", " SUNSET2: /images/sunset_hu1573057890424052540.jpg/123/Lat: 36.59744166666667")
+	b.AssertFileContent("public/nn/index.html", " SUNSET2: /images/sunset_hu1573057890424052540.jpg/123/Lat: 36.59744166666667")
 
-	b.AssertImage(200, 200, "public/bundle/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_resize_q75_box.jpg")
+	b.AssertImage(200, 200, "public/bundle/sunset_hu13235715490294913361.jpg")
 
 	// Check the file cache
-	b.AssertImage(200, 200, "resources/_gen/images/bundle/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_resize_q75_box.jpg")
+	b.AssertImage(200, 200, "resources/_gen/images/bundle/sunset_hu13235715490294913361.jpg")
 
-	b.AssertFileContent("resources/_gen/images/bundle/sunset_2020904703097093419.json",
+	b.AssertFileContent("resources/_gen/images/bundle/sunset_17710516992648092201.json",
 		"FocalLengthIn35mmFormat|uint16", "PENTAX")
 
-	b.AssertImage(123, 234, "resources/_gen/images/images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_123x234_resize_q75_box.jpg")
-
-	b.AssertFileContent("resources/_gen/images/images/sunset_2020904703097093419.json",
+	b.AssertFileContent("resources/_gen/images/images/sunset_17710516992648092201.json",
 		"FocalLengthIn35mmFormat|uint16", "PENTAX")
 
 	b.AssertNoDuplicateWrites()
diff --git a/hugolib/pagesfromdata/pagesfromgotmpl_integration_test.go b/hugolib/pagesfromdata/pagesfromgotmpl_integration_test.go
index 709d6db7b..a4cf4dcff 100644
--- a/hugolib/pagesfromdata/pagesfromgotmpl_integration_test.go
+++ b/hugolib/pagesfromdata/pagesfromgotmpl_integration_test.go
@@ -119,7 +119,7 @@ docs/p1/sub/mymixcasetext2.txt
 		"RelPermalink: /docs/p1/sub/mymixcasetext2.txt|Name: sub/mymixcasetext2.txt|",
 		"RelPermalink: /mydata.yaml|Name: sub/data1.yaml|Title: Sub data|Params: map[]|",
 		"Featured Image: /a/pixel.png|featured.png|",
-		"Resized Featured Image: /a/pixel_hu8aa3346827e49d756ff4e630147c42b5_70_10x10_resize_box_3.png|10|",
+		"Resized Featured Image: /a/pixel_hu16809842526914527184.png|10|",
 		// Resource from string
 		"RelPermalink: /docs/p1/mytext.txt|Name: textresource|Title: My Text Resource|Params: map[param1:param1v]|",
 		// Dates
diff --git a/hugolib/resource_chain_test.go b/hugolib/resource_chain_test.go
index fa25a2768..7683bb5fd 100644
--- a/hugolib/resource_chain_test.go
+++ b/hugolib/resource_chain_test.go
@@ -106,12 +106,12 @@ FAILED REMOTE ERROR DETAILS CONTENT: {{ with $failedImg.Err }}|{{ . }}|{{ with .
 		b.AssertFileContent("public/index.html",
 			fmt.Sprintf(`
 SUNSET: /images/sunset.jpg|/images/sunset.a9bf1d944e19c0f382e0d8f51de690f7d0bc8fa97390c4242a86c3e5c0737e71.jpg|900|90587
-FIT: /images/sunset.jpg|/images/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_fit_q75_box.jpg|200
+FIT: /images/sunset.jpg|/images/sunset_hu15210517121918042184.jpg|200
 CSS integrity Data first: sha256-od9YaHw8nMOL8mUy97Sy8sKwMV3N4hI3aVmZXATxH&#43;8= /styles.min.a1df58687c3c9cc38bf26532f7b4b2f2c2b0315dcde212376959995c04f11fef.css
 CSS integrity Data last:  /styles2.min.1cfc52986836405d37f9998a63fd6dd8608e8c410e5e3db1daaa30f78bc273ba.css sha256-HPxSmGg2QF03&#43;ZmKY/1t2GCOjEEOXj2x2qow94vCc7o=
 
 SUNSET REMOTE: /sunset_%[1]s.jpg|/sunset_%[1]s.a9bf1d944e19c0f382e0d8f51de690f7d0bc8fa97390c4242a86c3e5c0737e71.jpg|900|90587
-FIT REMOTE: /sunset_%[1]s.jpg|/sunset_%[1]s_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_fit_q75_box.jpg|200
+FIT REMOTE: /sunset_%[1]s.jpg|/sunset_%[1]s_hu15210517121918042184.jpg|200
 REMOTE NOT FOUND: OK
 LOCAL NOT FOUND: OK
 PRINT PROTOCOL ERROR DETAILS: Err: error calling resources.GetRemote: Get "gopher://example.org": unsupported protocol scheme "gopher"||
diff --git a/resources/image.go b/resources/image.go
index fc9d2467b..4595866d4 100644
--- a/resources/image.go
+++ b/resources/image.go
@@ -490,36 +490,16 @@ func (i *imageResource) relTargetPathFromConfig(conf images.ImageConfig) interna
 	if conf.TargetFormat != i.Format {
 		p2 = conf.TargetFormat.DefaultExtension()
 	}
-
-	h := i.hash()
-	idStr := fmt.Sprintf("_hu%d_%d", h, i.size())
-
-	// Do not change for no good reason.
-	const md5Threshold = 100
-
-	key := conf.GetKey(i.Format)
-
-	// It is useful to have the key in clear text, but when nesting transforms, it
-	// can easily be too long to read, and maybe even too long
-	// for the different OSes to handle.
-	if len(p1)+len(idStr)+len(p2) > md5Threshold {
-		key = hashing.MD5FromStringHexEncoded(p1 + key + p2)
-		huIdx := strings.Index(p1, "_hu")
-		if huIdx != -1 {
-			p1 = p1[:huIdx]
-		} else {
-			// This started out as a very long file name. Making it even longer
-			// could melt ice in the Arctic.
-			p1 = ""
-		}
-	} else if strings.Contains(p1, idStr) {
-		// On scaling an already scaled image, we get the file info from the original.
-		// Repeating the same info in the filename makes it stuttery for no good reason.
-		idStr = ""
+	const prefix = "_hu"
+	huIdx := strings.LastIndex(p1, prefix)
+	incomingID := "i"
+	if huIdx > -1 {
+		incomingID = p1[huIdx+len(prefix):]
+		p1 = p1[:huIdx]
 	}
-
+	hash := hashing.HashUint64(incomingID, i.hash(), conf.GetKey(i.Format))
 	rp := i.getResourcePaths()
-	rp.File = fmt.Sprintf("%s%s_%s%s", p1, idStr, key, p2)
+	rp.File = fmt.Sprintf("%s%s%d%s", p1, prefix, hash, p2)
 
 	return rp
 }
diff --git a/resources/image_extended_test.go b/resources/image_extended_test.go
index 2f1f4f4a4..e570c4a3d 100644
--- a/resources/image_extended_test.go
+++ b/resources/image_extended_test.go
@@ -42,6 +42,6 @@ func TestImageResizeWebP(t *testing.T) {
 	resized, err := image.Resize("123x")
 	c.Assert(err, qt.IsNil)
 	c.Assert(image.MediaType(), qt.Equals, media.Builtin.WEBPType)
-	c.Assert(resized.RelPermalink(), qt.Equals, "/a/sunrise_hu6ad68bcbae1b79cbc2f6b451894deaf6_95652_123x0_resize_q68_h2_linear_2.webp")
+	c.Assert(resized.RelPermalink(), qt.Equals, "/a/sunrise_hu544374262273649331.webp")
 	c.Assert(resized.Width(), qt.Equals, 123)
 }
diff --git a/resources/image_test.go b/resources/image_test.go
index 70df7b9de..5cebba837 100644
--- a/resources/image_test.go
+++ b/resources/image_test.go
@@ -123,28 +123,28 @@ func TestImageTransformBasic(t *testing.T) {
 	assertWidthHeight(resizedAndRotated, 125, 200)
 
 	assertWidthHeight(resized, 300, 200)
-	c.Assert(resized.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_300x200_resize_q68_linear.jpg")
+	c.Assert(resized.RelPermalink(), qt.Equals, "/a/sunset_hu2082030801149749592.jpg")
 
 	fitted, err := resized.Fit("50x50")
 	c.Assert(err, qt.IsNil)
-	c.Assert(fitted.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_625708021e2bb281c9f1002f88e4753f.jpg")
+	c.Assert(fitted.RelPermalink(), qt.Equals, "/a/sunset_hu16263619592447877226.jpg")
 	assertWidthHeight(fitted, 50, 33)
 
 	// Check the MD5 key threshold
 	fittedAgain, _ := fitted.Fit("10x20")
 	fittedAgain, err = fittedAgain.Fit("10x20")
 	c.Assert(err, qt.IsNil)
-	c.Assert(fittedAgain.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_3f65ba24dc2b7fba0f56d7f104519157.jpg")
+	c.Assert(fittedAgain.RelPermalink(), qt.Equals, "/a/sunset_hu847809310637164306.jpg")
 	assertWidthHeight(fittedAgain, 10, 7)
 
 	filled, err := image.Fill("200x100 bottomLeft")
 	c.Assert(err, qt.IsNil)
-	c.Assert(filled.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x100_fill_q68_linear_bottomleft.jpg")
+	c.Assert(filled.RelPermalink(), qt.Equals, "/a/sunset_hu18289448341423092707.jpg")
 	assertWidthHeight(filled, 200, 100)
 
 	smart, err := image.Fill("200x100 smart")
 	c.Assert(err, qt.IsNil)
-	c.Assert(smart.RelPermalink(), qt.Equals, fmt.Sprintf("/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x100_fill_q68_linear_smart%d.jpg", 1))
+	c.Assert(smart.RelPermalink(), qt.Equals, "/a/sunset_hu11649371610839769766.jpg")
 	assertWidthHeight(smart, 200, 100)
 
 	// Check cache
@@ -154,12 +154,12 @@ func TestImageTransformBasic(t *testing.T) {
 
 	cropped, err := image.Crop("300x300 topRight")
 	c.Assert(err, qt.IsNil)
-	c.Assert(cropped.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_300x300_crop_q68_linear_topright.jpg")
+	c.Assert(cropped.RelPermalink(), qt.Equals, "/a/sunset_hu2242042514052853140.jpg")
 	assertWidthHeight(cropped, 300, 300)
 
 	smartcropped, err := image.Crop("200x200 smart")
 	c.Assert(err, qt.IsNil)
-	c.Assert(smartcropped.RelPermalink(), qt.Equals, fmt.Sprintf("/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_200x200_crop_q68_linear_smart%d.jpg", 1))
+	c.Assert(smartcropped.RelPermalink(), qt.Equals, "/a/sunset_hu12983255101170993571.jpg")
 	assertWidthHeight(smartcropped, 200, 200)
 
 	// Check cache
@@ -226,7 +226,7 @@ func TestImageTransformFormat(t *testing.T) {
 
 	imagePng, err := image.Resize("450x png")
 	c.Assert(err, qt.IsNil)
-	c.Assert(imagePng.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_450x0_resize_linear.png")
+	c.Assert(imagePng.RelPermalink(), qt.Equals, "/a/sunset_hu11737890885216583918.png")
 	c.Assert(imagePng.ResourceType(), qt.Equals, "image")
 	assertExtWidthHeight(imagePng, ".png", 450, 281)
 	c.Assert(imagePng.Name(), qt.Equals, "sunset.jpg")
@@ -234,7 +234,7 @@ func TestImageTransformFormat(t *testing.T) {
 
 	imageGif, err := image.Resize("225x gif")
 	c.Assert(err, qt.IsNil)
-	c.Assert(imageGif.RelPermalink(), qt.Equals, "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_225x0_resize_linear.gif")
+	c.Assert(imageGif.RelPermalink(), qt.Equals, "/a/sunset_hu1431827106749674475.gif")
 	c.Assert(imageGif.ResourceType(), qt.Equals, "image")
 	assertExtWidthHeight(imageGif, ".gif", 225, 141)
 	c.Assert(imageGif.Name(), qt.Equals, "sunset.jpg")
@@ -257,7 +257,7 @@ func TestImagePermalinkPublishOrder(t *testing.T) {
 			}()
 
 			check1 := func(img images.ImageResource) {
-				resizedLink := "/a/sunset_hu59e56ffff1bc1d8d122b1403d34e039f_90587_100x50_resize_q75_box.jpg"
+				resizedLink := "/a/sunset_hu7919355342577096259.jpg"
 				c.Assert(img.RelPermalink(), qt.Equals, resizedLink)
 				assertImageFile(c, spec.PublishFs, resizedLink, 100, 50)
 			}
@@ -298,12 +298,12 @@ func TestImageBugs(t *testing.T) {
 		c.Assert(err, qt.IsNil)
 		c.Assert(resized, qt.Not(qt.IsNil))
 		c.Assert(resized.Width(), qt.Equals, 200)
-		c.Assert(resized.RelPermalink(), qt.Equals, "/a/_hu59e56ffff1bc1d8d122b1403d34e039f_90587_65b757a6e14debeae720fe8831f0a9bc.jpg")
+		c.Assert(resized.RelPermalink(), qt.Equals, "/a/1234567890qwertyuiopasdfghjklzxcvbnm5to6eeeeee7via8eleph_hu9514381480012510326.jpg")
 		resized, err = resized.Resize("100x")
 		c.Assert(err, qt.IsNil)
 		c.Assert(resized, qt.Not(qt.IsNil))
 		c.Assert(resized.Width(), qt.Equals, 100)
-		c.Assert(resized.RelPermalink(), qt.Equals, "/a/_hu59e56ffff1bc1d8d122b1403d34e039f_90587_c876768085288f41211f768147ba2647.jpg")
+		c.Assert(resized.RelPermalink(), qt.Equals, "/a/1234567890qwertyuiopasdfghjklzxcvbnm5to6eeeeee7via8eleph_hu1776700126481066216.jpg")
 	})
 
 	// Issue #6137
@@ -401,7 +401,7 @@ func TestImageResize8BitPNG(t *testing.T) {
 	resized, err := image.Resize("800x")
 	c.Assert(err, qt.IsNil)
 	c.Assert(resized.MediaType().Type, qt.Equals, "image/png")
-	c.Assert(resized.RelPermalink(), qt.Equals, "/a/gohugoio_hu0e1b9e4a4be4d6f86c7b37b9ccce3fbc_73886_800x0_resize_linear_3.png")
+	c.Assert(resized.RelPermalink(), qt.Equals, "/a/gohugoio_hu8582372628235034388.png")
 	c.Assert(resized.Width(), qt.Equals, 800)
 }
 
@@ -814,10 +814,10 @@ func assetGoldenDirs(c *qt.C, dir1, dir2 string) {
 
 			if !goldenEqual(nrgba1, nrgba2) {
 				switch fi1.Name() {
-				case "gohugoio8_hu7f72c00afdf7634587afaa5eff2a25b2_73538_73c19c5f80881858a85aa23cd0ca400d.png",
-					"gohugoio8_hu7f72c00afdf7634587afaa5eff2a25b2_73538_ae631e5252bb5d7b92bc766ad1a89069.png",
-					"gohugoio8_hu7f72c00afdf7634587afaa5eff2a25b2_73538_d1bbfa2629bffb90118cacce3fcfb924.png",
-					"giphy_hu3eafc418e52414ace6236bf1d31f82e1_52213_200x0_resize_box_1.gif":
+				case "giphy_hu13007323561585908901.gif",
+					"gohugoio8_hu12690451569630232821.png",
+					"gohugoio8_hu1619987041333606118.png",
+					"gohugoio8_hu18164141965527013334.png":
 					c.Log("expectedly differs from golden due to dithering:", fi1.Name())
 				default:
 					c.Errorf("resulting image differs from golden: %s", fi1.Name())
diff --git a/resources/resources_integration_test.go b/resources/resources_integration_test.go
index 9c511332f..c26eb8fff 100644
--- a/resources/resources_integration_test.go
+++ b/resources/resources_integration_test.go
@@ -27,6 +27,7 @@ func TestImageCache(t *testing.T) {
 
 	files := `
 -- config.toml --
+disableLiveReload = true
 baseURL = "https://example.org"
 -- content/mybundle/index.md --
 ---
@@ -61,9 +62,9 @@ anigif: {{ $anigif.RelPermalink }}|{{ $anigif.Width }}|{{ $anigif.Height }}|{{ $
 
 	assertImages := func() {
 		b.AssertFileContent("public/index.html", `
-		gif: /mybundle/pixel_hu8aa3346827e49d756ff4e630147c42b5_70_1x2_resize_box_3.gif|}|1|2|image/gif|
-		bmp: /mybundle/pixel_hu8aa3346827e49d756ff4e630147c42b5_70_2x3_resize_box_3.bmp|}|2|3|image/bmp|
-		anigif: /mybundle/giphy_hu3eafc418e52414ace6236bf1d31f82e1_52213_4x5_resize_box_1.gif|4|5|image/gif|
+		gif: /mybundle/pixel_hu14657638653019978294.gif|}|1|2|image/gif|
+		bmp: /mybundle/pixel_hu14705577916774115224.bmp|}|2|3|image/bmp|
+		anigif: /mybundle/giphy_hu3665406585348417395.gif|4|5|image/gif|
 		`)
 	}
 
@@ -159,9 +160,9 @@ resize 2|RelPermalink: {{ $image.RelPermalink }}|MediaType: {{ $image.MediaType
 	b := hugolib.Test(t, files)
 
 	b.AssertFileContent("public/index.html",
-		"jpg|RelPermalink: /images/pixel_hu8aa3346827e49d756ff4e630147c42b5_70_filter_1397118720664523257.jpg|MediaType: image/jpeg|Width: 1|Height: 1|",
-		"resize 1|RelPermalink: /images/pixel_hu8aa3346827e49d756ff4e630147c42b5_70_filter_3796633496882814163.jpg|MediaType: image/jpeg|Width: 20|Height: 30|",
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index f12dd18fc..f12dd18fc 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_200x100_resize_q75_box.jpg
+++ b/resources/testdata/golden/sunset_hu4475169669413030903.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_7394663371967385838.jpg b/resources/testdata/golden/sunset_hu4645485093540451131.jpg
index 41b42a883..41b42a883 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_7394663371967385838.jpg
+++ b/resources/testdata/golden/sunset_hu4645485093540451131.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_10484317606894136532.jpg b/resources/testdata/golden/sunset_hu5700214275785775137.jpg
index f09ff9e33..f09ff9e33 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_10484317606894136532.jpg
+++ b/resources/testdata/golden/sunset_hu5700214275785775137.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_4537007754286294453.jpg b/resources/testdata/golden/sunset_hu5943101889480068836.jpg
index 7e35750db..7e35750db 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_4537007754286294453.jpg
+++ b/resources/testdata/golden/sunset_hu5943101889480068836.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_9987965893403929502.jpg b/resources/testdata/golden/sunset_hu6418511461467579286.jpg
index 60207a829..60207a829 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_9987965893403929502.jpg
+++ b/resources/testdata/golden/sunset_hu6418511461467579286.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_16826185614123406698.jpg b/resources/testdata/golden/sunset_hu7124641571345460976.jpg
index ee246814d..ee246814d 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_16826185614123406698.jpg
+++ b/resources/testdata/golden/sunset_hu7124641571345460976.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_100x100_fill_q75_box_center.jpg b/resources/testdata/golden/sunset_hu7168213667150853195.jpg
index 8e6164e32..8e6164e32 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_100x100_fill_q75_box_center.jpg
+++ b/resources/testdata/golden/sunset_hu7168213667150853195.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_10145879774663310287.jpg b/resources/testdata/golden/sunset_hu8110718388195953309.jpg
index 93b914161..93b914161 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_10145879774663310287.jpg
+++ b/resources/testdata/golden/sunset_hu8110718388195953309.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_6226609227946633992.jpg b/resources/testdata/golden/sunset_hu8726458014885573310.jpg
index e7db706c2..e7db706c2 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_6226609227946633992.jpg
+++ b/resources/testdata/golden/sunset_hu8726458014885573310.jpg
diff --git a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_12108901413150876595.jpg b/resources/testdata/golden/sunset_hu9995349819947557369.jpg
index f7e84e33d..f7e84e33d 100644
--- a/resources/testdata/golden/sunset_hu13399802095542588467_0_400x200_fill_q75_box_center_filter_12108901413150876595.jpg
+++ b/resources/testdata/golden/sunset_hu9995349819947557369.jpg
diff --git a/resources/testdata/golden_webp/fuzzy-cirlcle_hu525d1a6cf670e85f5e8f19890241399b_26792_200x0_resize_q75_h2_box_3.webp b/resources/testdata/golden_webp/fuzzy-cirlcle_hu11078464949742740533.webp
index c9d229782..c9d229782 100644
--- a/resources/testdata/golden_webp/fuzzy-cirlcle_hu525d1a6cf670e85f5e8f19890241399b_26792_200x0_resize_q75_h2_box_3.webp
+++ b/resources/testdata/golden_webp/fuzzy-cirlcle_hu11078464949742740533.webp
diff --git a/resources/transform_test.go b/resources/transform_test.go
index 7f91360f1..b036a44d7 100644
--- a/resources/transform_test.go
+++ b/resources/transform_test.go
@@ -386,15 +386,15 @@ func TestTransform(t *testing.T) {
 		resizedPublished1, err := img.Resize("40x40")
 		c.Assert(err, qt.IsNil)
 		c.Assert(resizedPublished1.Height(), qt.Equals, 40)
-		c.Assert(resizedPublished1.RelPermalink(), qt.Equals, "/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_40x40_resize_linear_3.png")
-		assertShouldExist(c, spec, "public/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_40x40_resize_linear_3.png", true)
+		c.Assert(resizedPublished1.RelPermalink(), qt.Equals, "/gopher.changed_hu16988682630555427117.png")
+		assertShouldExist(c, spec, "public/gopher.changed_hu16988682630555427117.png", true)
 
 		// Permalink called.
 		resizedPublished2, err := img.Resize("30x30")
 		c.Assert(err, qt.IsNil)
 		c.Assert(resizedPublished2.Height(), qt.Equals, 30)
-		c.Assert(resizedPublished2.Permalink(), qt.Equals, "https://example.com/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_30x30_resize_linear_3.png")
-		assertShouldExist(c, spec, "public/gopher.changed_hu2e827f5a78333ebc04166dd643235dea_1462_30x30_resize_linear_3.png", true)
+		c.Assert(resizedPublished2.Permalink(), qt.Equals, "https://example.com/gopher.changed_hu14141325020798305104.png")
+		assertShouldExist(c, spec, "public/gopher.changed_hu14141325020798305104.png", true)
 
 		// Not published because none of RelPermalink or Permalink was called.
 		resizedNotPublished, err := img.Resize("50x50")
diff --git a/tpl/resources/resources_integration_test.go b/tpl/resources/resources_integration_test.go
index 6bc872bca..cfd03dc73 100644
--- a/tpl/resources/resources_integration_test.go
+++ b/tpl/resources/resources_integration_test.go
@@ -58,7 +58,7 @@ Copy3: {{ $copy3.RelPermalink}}|{{ $copy3.MediaType }}|{{ $copy3.Content | safeJ
 
 	b.AssertFileContent("public/index.html", `
 Image Orig:  /blog/images/pixel.png|image/png|1|1|
-Image Copy1:  /blog/images/copy_hu8aa3346827e49d756ff4e630147c42b5_70_3x4_resize_box_3.png|image/png|3|4|
+Image Copy1:  /blog/images/copy_hu2891316072287293157.png|image/png|3|4|
 Image Copy2:  /blog/images/copy2.png|image/png|3|4
 Image Copy3:  image/png|3|4|
 Orig: /blog/js/foo.js|text/javascript|let foo;|