Near-Lossless Image Compressor
Shrink photos at very high quality (90–95). Most people can't tell the difference — but it's not mathematically lossless, so keep your original too.
About the Near-Lossless Compressor
True lossless PNG re-encoding saves little, so this tool takes a smarter route: it tries 95%, 90%, 85% and 80% JPEG/WebP quality in order and accepts the first one that beats your original file size. At these settings artifacts are very hard to spot in most photos — but the file is not mathematically identical, so keep your originals if you need bit-exact copies.
How it works
This tool tries quality 95, 90, 85 and 80 in order and keeps the first setting that produces a smaller file than your original. At these levels, artifacts are very hard to spot in most photos — though pixel-peepers comparing crops side by side may notice the difference in fine textures.
How to use it
Add up to 10 images, pick WebP (best compression) or JPG, and process. Compare each result's preview against the original in the results panel — savings are reported per file. If a particular image must be mathematically lossless, keep the original instead.
Supported formats & limitations
Inputs: .jpg, .png, .webp up to 30MB each. Output: WebP or JPG. 'Near-lossless' means savings with no difference most viewers can see at normal sizes; it is still a re-encode, so archivists working with master files should treat originals as irreplaceable.
Common use cases
For photographers delivering client galleries, shops publishing product photos, and anyone who wants smaller files without an obvious quality hit. It's the gentlest setting in the PixKitApp compression family — start here, then compress harder only if you must.
Frequently asked questions
Is my image uploaded to a server when I use Near-Lossless Compressor?
Everything runs locally in your browser via the Canvas API. Your picture never leaves your machine — there is no upload step at all, so processing is as private as working in an offline editor.
Which input formats does Near-Lossless Compressor accept?
Common formats are covered: JPG, PNG or WEBP, each up to 30 MB. Paste from the clipboard, drag and drop, or use the select button.
What are the size and batch limits?
Up to 10 images per batch, 30 MB per file, and unlimited runs — no signup, no counters, and no watermark stamped on results.
Can I fine-tune the result before downloading?
The controls cover Output format. Nothing is baked in until you press the action button, and every run gives you a fresh preview to check.
Related tools
Image Compressor
Compress JPG, PNG and WebP images online for free — can significantly reduce file size. Private, no upload, instant results in your browser.
Compress PNG
Compress PNG files online with optional color reduction. Shrink PNG screenshots, logos and graphics while keeping transparency.
Compress JPEG
Compress JPG/JPEG photos online free. Fine-tune quality, keep photos sharp, and shrink files for email or web — no upload needed.
Compress WebP
Compress WebP images online free. Reduce WebP file size with a quality slider while keeping modern browser compatibility.
Image Optimizer
Optimize images with smart resize + compression in one step. Set max dimensions and quality — perfect for websites and blogs.
BMP to PNG
Convert BMP bitmaps to lossless PNG online free. Same pixels, modern format, far smaller file — no upload.