From 1123fafd0174db72897ff2ca27e72e1c7412318f Mon Sep 17 00:00:00 2001
From: Tianjie Xu
Date: Wed, 3 Aug 2016 01:25:00 -0700
Subject: Further compress the text images with zopflipng

Bug:30415666
Test: Graphic tests pass on angler with new image files
Change-Id: I8716f53cb2f9fc6598fdc84f84e9626994faaa5e
---
 tools/recovery_l10n/README.md | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'tools')

diff --git a/tools/recovery_l10n/README.md b/tools/recovery_l10n/README.md
index bf41ff24..1554f661 100644
--- a/tools/recovery_l10n/README.md
+++ b/tools/recovery_l10n/README.md
@@ -25,6 +25,8 @@
     *   "pngcrush -c 0 ..." converts "text-out.png" into a 1-channel image,
         which is accepted by Recovery. This also compresses the image file by
         ~60%.
+    *   zopflipng could further compress the png files by ~10%, more details
+        in https://github.com/google/zopfli/blob/master/README.zopflipng
     *   If you're using other png compression tools, make sure the final text
         image works by running graphic tests under the recovery mode.
 
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