Compress JPG, PNG and WebP images in bulk without uploading a single byte. The whole tool runs inside your browser, so there is no queue, no sign-up, no watermark and no file-size cap — and your photos never touch a server.
No images added yet.
There is nothing to install and nothing to sign up for. Open the page, drop your files in, and you have optimized images a few seconds later.
Drag JPG, PNG or WebP files onto the drop zone, or click it to browse. You can add dozens at once.
Move the quality slider. 75 is a good default — lower values make smaller files, higher values keep more detail.
Press Compress All, then download each optimized image or use Download All to save the whole batch.
This is the same compression step we run inside Vynex Studio before publishing thumbnails and image-based videos, rebuilt to run in a browser tab.
Files are decoded and re-encoded by your own browser. No upload, no server-side copy, no retention policy to read.
Drop in an entire folder's worth of images and compress them in one pass, then save the whole batch with one click.
Auto mode encodes each image as both WebP and JPEG and keeps whichever came out smaller, so PNG screenshots shrink dramatically.
Cap the longest edge at 1920, 1280 or 800 pixels. For phone photos this alone often removes 80% of the file size.
No daily quota, no 5 MB ceiling, no email wall, no watermark on the output. It is a static page and a bit of JavaScript.
Re-encoding drops EXIF data, including GPS coordinates and camera serial numbers, before you publish anything.
Images are usually the heaviest thing on a web page. A single unoptimized photo straight off a phone can be 6–12 MB, while the same image at quality 75 and 1920 pixels wide is often under 300 KB and looks identical on screen. That difference shows up directly in Core Web Vitals: Largest Contentful Paint is an image on the majority of pages, and it is the metric most likely to fail a Google page-experience check.
The same applies outside the web. YouTube caps custom thumbnails at 2 MB and rejects anything larger, so a compression pass is often the difference between an upload going through and being bounced. Email attachments, Discord uploads, marketplace listings and CMS media libraries all have their own ceilings, and all of them are easier to live under once images are properly encoded.
The reason this tool can be free and unlimited is that it does not cost us anything to run. Traditional online compressors upload your file, process it on a server, and bill for that bandwidth and CPU — which is why they cap file sizes and batch counts. Here the work happens on hardware you already own, so the only real limits are your own RAM and patience. It also means the privacy question answers itself: there is no server-side copy of your image, because there was never an upload.
If you compress images every day as part of a production pipeline, the desktop version in
Vynex Studio handles whole folders recursively, can
overwrite originals in place, and uses sharp for better encoding than a browser canvas can
reach. This page covers the one-off and mid-sized jobs.
Auto mode decides for you by trying more than one encoder and keeping the smallest result. If you would rather choose manually, this is the short version.
| Format | Best for | Transparency | Typical saving |
|---|---|---|---|
| WebP | Almost everything on the modern web | Yes | 60–80% vs PNG, 25–35% vs JPEG |
| JPEG | Photographs, maximum compatibility | No | 50–90% vs the original camera file |
| PNG | Logos, flat graphics, when transparency is essential | Yes | Small — PNG is already lossless |
| Auto | Mixed batches where you do not want to think about it | Preserved when needed | Whichever of the above wins |
Everything people usually ask before trusting a compressor with their photos.
The rest of the Vynex Studio toolkit, also free and also running in your browser.
Erase the Gemini sparkle watermark from AI images, fully offline.
Clear the Dola AI watermark from generated images and videos, right in your browser.
Grab any video thumbnail in full 1280×720 HD — no API key needed.
Save YouTube videos as MP4 in up to 1080p, straight to your device.
Pull any video transcript as TXT, SRT or VTT in one click.
Vynex Studio is a free Windows app with the same compression tool built in — plus recursive folder scanning, in-place overwrite, and bulk AI image generation across Gemini and Google Labs Flow.
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