Does my image get uploaded?

No. All compression happens locally in your browser using the Canvas API. Your files never leave your device and are never sent to a server.

Does compression reduce quality?

Lossy formats (JPG, WebP, AVIF) trade a little quality for much smaller files, and the quality slider lets you find the right balance. PNG is lossless, so it stays pixel-perfect.

Which formats are supported?

You can compress JPG, PNG and WebP. You can also convert a PNG photo to WebP during compression for much smaller files.

Can I compress to a specific file size?

Yes. Switch to “Target size” mode and PixelVault searches for the highest quality that fits under your chosen KB limit.

Can I compress multiple images at once?

Yes. Drop in as many images as you like and download them individually or together as a single ZIP file.

Compress an image to 300KB

Need an image at 300 KB exactly? Type the target and let the compressor find the highest quality that still fits under it. The before/after preview proves the result holds up, and the whole thing runs on your device — no uploads, no watermark.

Privacy-first: every image is processed locally in your browser. Nothing is uploaded, stored or transmitted to any server.

A target, not a guess

Portals and forms that ask for “under 300 KB” usually leave you dragging a quality slider and re-exporting until you get lucky. Here you enter 300 KB once and the compressor searches for the quality level that lands just beneath it — one pass, no trial and error. 300 KB is a comfortable ceiling: big enough to keep a full-resolution photo looking clean, small enough for most upload limits.

Why 300 KB is a sweet spot

Tighter limits like 100 KB force visible compromises on detailed photos; 300 KB usually keeps them invisible, which is why so many job portals, school systems and government forms settle on it. Switch the output to WebP and you often reach 300 KB with even more quality to spare. Because the search runs locally, you can retarget as many images as you like with no per-file cost and nothing leaving your browser.

Frequently asked questions

Does my image get uploaded?: No. All compression happens locally in your browser using the Canvas API. Your files never leave your device and are never sent to a server.
Does compression reduce quality?: Lossy formats (JPG, WebP, AVIF) trade a little quality for much smaller files, and the quality slider lets you find the right balance. PNG is lossless, so it stays pixel-perfect.
Which formats are supported?: You can compress JPG, PNG and WebP. You can also convert a PNG photo to WebP during compression for much smaller files.
Can I compress to a specific file size?: Yes. Switch to “Target size” mode and PixelVault searches for the highest quality that fits under your chosen KB limit.
Can I compress multiple images at once?: Yes. Drop in as many images as you like and download them individually or together as a single ZIP file.

All image tools

Image Compressor — Shrink JPG, PNG & WebP without the quality loss you can see.
Image Converter — Convert between JPG, PNG, WebP, AVIF and BMP — HEIC input supported.
Image to PDF Converter — Turn images into a PDF — or PDF pages into images.
Image Resizer — Resize by pixels or percentage with ready-made presets.
Image Cropper — Crop, rotate, flip and straighten with precision.
Background Remover — AI background removal & blur — right on your device.
Image to Text (OCR) — Extract text from images and screenshots — locally.
Image Rotator — Rotate and flip many images at once by any angle.
Image Editor — Crop, rotate, flip, annotate, add text and blur — in one editor.
Remove Image Metadata — View and strip EXIF, GPS and location data.
Privacy Blur — Blur, pixelate or black out sensitive info in seconds.
Image Watermark — Add text or logo watermarks — single images or whole batches.
Color & Image Analyzer — Dominant colors, palettes, histogram and contrast.