
Squoosh
TinyPNG
iLoveIMG
ImageOptim
XnConvert
DVDVideoSoft Image Convert and Resize
Batch Image Resizer
Compress your pictures up to 90% without visible quality loss.

Beyond Compare
Meld
WinMerge
Araxis Merge
Devart Code Compare
Diff Checker
Diff Doc
A fast, precise desktop diff and merge tool for Windows, macOS, and Linux. Syntax-aware diffs, directory comparison, three-way merge, PDF comparison. Free tier available.

Which is more popular?
Based on our record, Caesium Image Compressor seems to be more popular. It has been mentioned 10 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | saerasoft.com | getdiffract.com |
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| Platforms | — | |
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What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Caesium Image Compressor and Diffract.
Diffract's answer:
Diffract is a purpose-built desktop diff tool that handles far more than plain text. A single app compares text, binary (hex view), images, PDFs, Word documents, Excel spreadsheets, ZIP/tar archives, and Git commits - all in a multi-tab interface. On top of the standard Myers diff, it offers Patience and Histogram algorithms per comparison, AST-based semantic diff that understands code structure (not just line changes), and automatic moved-block detection. It also runs fully headless as a CLI tool for use in CI pipelines.
Diffract's answer:
Diffract is purpose-built, so it supports file types (PDF, Word, Excel, archives), workflows (three-way merge, Git browsing, semantic diff), and UX features (drag-and-drop, OS context menus, in-panel editing with undo/redo, minimap, search) that e.g. an IDE's diff panel simply doesn't cover.
Diffract's answer:
Software developers and DevOps/SRE engineers who compare code, config files, and build artifacts daily. A secondary audience includes QA and release engineers who need to diff generated outputs and directory trees, and technical writers or analysts who compare Word documents, PDFs, or Excel exports without wanting a cloud-based or subscription tool.
Diffract's answer:
Flutter and Dart (cross-platform desktop UI, targeting Windows, macOS, and Linux).
Share your experience with using Caesium Image Compressor and Diffract. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I also use Caesium Image Compressor on my ROMs and Themes folder to reduce their size and improve the RG35XX's responsiveness. Source: over 3 years ago
If you want further compression you could check out Caesium Image Compressor which is free (and I'm not affiliated with it incidentally, I just like it). Source: over 3 years ago
Try an image compression tool, this one is free and open source: https://saerasoft.com/caesium/. Source: over 3 years ago
Tracking Diffract since May 2026.
When comparing Caesium Image Compressor and Diffract, you can also consider the following products.

Compress and compare images with different codecs, right in your browser
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Beyond Compare allows you to compare files and folders.
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Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!
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What is Meld? Meld is a visual diff and merge tool targeted at developers.
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iLoveIMG is one of most powerful solution that comes with all the major tool you cloud want to edit images in bulk.
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WinMerge is an open source differencing and merging tool for Windows.
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