FlowVidFlowVid.

Compress tool

Compress or Convert Image to 350KB Online — Free Photo Compressor

Reduce any image to under 350KB while keeping it sharp. A 350 kilobyte budget holds fine detail for photos that still need to fit a moderate upload limit — good for portals, listings and high-quality web images. It doubles as a free photo-to-350KB converter — compress or convert any JPG or PNG to 350KB in one click.

To compress a photo to 350KB, upload it and the tool re-encodes the image at the highest quality that still fits under 350KB, then hands you the file to download. "Compress to 350KB" and "convert to 350KB" are the same job — it works on any JPG, PNG or WebP photo and needs no sign-up.

100% private — your images never leave your device. No upload, no sign-up.

target ≤ 350 KBnothing stored

Drop your image here

or click to browse

accepts: JPG, PNG, WebP, HEIC

Required photo dimensions and file sizes differ between forms and change over time. This tool helps you hit a common target, but always verify the exact requirement on the official form or notification before you submit.

How to compress to 350kb

  1. Drop your image in, or click to browse and select it.
  2. The tool automatically finds the highest quality that still fits under 350KB.
  3. Check the live preview and the final file size.
  4. Download your optimised image — ready to upload.

What you can use it for

  • Forms and portals with a 350KB limit
  • Detailed product and listing photos
  • High-quality web and portfolio images
  • Sharing detailed photos at a smaller size

Why use FlowVid Tools

  • Private by default — we never store your images. They're discarded the moment you're done.
  • Completely free with no watermark and no sign-up required.
  • Fast — drop your image, get the result in seconds. No queues, no waiting.

Supported formats

This tool accepts JPG, PNG, WebP, HEIC as input and gives you a 350KB image as output. Files are processed in seconds and never stored — we keep nothing once you have your result.

FAQ

Frequently asked questions

Yes. 350KB leaves plenty of room for detail, so for most photos the compressed version is hard to tell from the original on screen while being much smaller than a raw file.

Yes — "compress to 350KB" and "convert to 350KB" mean the same thing here. The tool re-encodes your JPG or PNG and shrinks it to fit 350KB, so you can convert any photo to a 350KB file that's ready to upload.

No. We never store, share or look at your images — every file is discarded the moment processing finishes and nothing is saved. That makes it safe even for sensitive documents like passports, ID cards and bank statements.

Yes. There is no cost, no watermark and no account needed. Anonymous users get a generous daily limit, which is plenty for everyday use.
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🗜️QUALITY

Compress Image

Compress any photo with a live quality slider.

Open→
Edit & resize

Resize, upscale, crop & rotate

Jump to a size

Compress to a specific size