![]() ![]() Put a proper file name, for example, Test-100Quality.jpg Open an uncompressed image and export it with some settings. If you are ok with the file size, and if you actually can see the compression artifacts and you are ok with them, then that is the best option for you. There is no such thing as the "best option", only the best option for you. (Yes, I am still a little obsessed with the topic) III. Some day I will complete and modernize that paper, including a graph compression vs filesize and data loss. Besides dropping the color profile and some other data, possibly including some copyright metadata you could have. Some tests should be done to these third-party compression tools, but most likely they are using a 4:2:2 subsampling or even smaller ones. The point is that according to my tests Ps uses the best quality one which is 4:4:4. And still, I got a decent result compressing at 10% compared to an uncompressed file. Those tests are done with ancient versions of Ps and PhotoPaint. Take your original, and paste it on top of the compressed version and choose difference as blending mode. What I want you to see is a way to actually analyze data loss. It is in Spanish, please use google translate for now. Let me spam you with an old test I did several years ago. I do not use "third-party" tools for optimizing file weight, I do not feel it is really necessary because you already have Ps. I must say that I was a little obsessed with the topic, but not that much anymore. That will slow down the optimisation process considerably, so you might have to compromise. Move the Optimisation level slider towards the Insane direction. Personally I keep JPEG quality to 97%, the quality drop is not noticeable (for my purposes).Įnable Strip PNG metadata and Strip JPEG metadata, that reduces file size and doesn't affect the quality. Keep the JPEG/PNG/GIF quality slider on 100% so the images don't receive any compression (which would affect quality). ![]() That file will need to be optimised again.įor minimal quality loss don't enable lossy minification in ImageOptim so the image doesn't lose too much quality. The optimisation done for the original won't be passed down to the resized image. The color table might change, the pixel color at a specific coordinate is not necessarily the same as in the original. whenever you resize an image you're essentially creating a new file.So you have to process the final file again. Photoshop adds metadata when exporting files even if you optimise the source file.Optimisation should always be the last step. Compressing images with the website is free for everyone and we like to keep it that way! If you like TinyPNG please contribute by making a donation.I optimise images for web almost everyday. In 2014 we added intelligent compression for JPEG images and in 2016 we added support for animated PNG. We created TinyPNG in our quest to make our own websites faster and more fun to use with the best compression. Why did you create TinyPNG?Įxcellent question! We frequently use PNG images, but were frustrated with the load times. It allows you to scale, preview and save compressed PNG and JPEG images straight from Photoshop. You can also install the TinyPNG Photoshop plugin. We’ll convert them to tiny indexed PNG files. You can use Save for Web to export your images as 24-bit transparent PNG files and upload them to TinyPNG. With other versions it is impossible and Photoshop CS5 cannot even display them properly. What about Photoshop?Įxcellent question! Only Photoshop CC 2015 or newer can save images as indexed PNG files with alpha transparency. If you want to create and compress stickers under 500 KB take a look at the iMessage Panda sticker example on Github. Only Interned Explorer does not support the format yet.Īpple added animated stickers to iMessage with the release of iOS 10. Binary transparency without any workarounds! Is it safe to use animated PNG?Įxcellent question! Chrome, Firefox, Safari and now Microsoft Edge all support APNG. With TinyPNG the background becomes transparent again. Still need to support Internet Explorer 6? It normally ignores PNG transparency and displays a solid background color. Is it supported everywhere?Įxcellent question! The files produced by TinyPNG are displayed perfectly on all modern browsers including mobile devices. I have excellent eyesight but can’t spot the difference either! Use the optimized image to save bandwidth and loading time and your website visitors will thank you. In the above image the file size is reduced by more than 70%. The result better PNG files with 100% support for transparency. All unnecessary metadata is stripped too. By reducing the number of colors, 24-bit PNG files can be converted to much smaller 8-bit indexed color images. File size 57 KB vs Shrunk transparent PNGĮxcellent question! When you upload a PNG (Portable Network Graphics) file, similar colors in your image are combined. ![]()
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