FlowVidFlowVid.

Compress tool

Compress JPEG Online — Free JPG Compressor

Compress a JPEG file in seconds without installing anything. Drop your JPG in, set the quality, and download a much smaller file — the compression runs entirely in your browser, so your photo is never uploaded or stored. PNG, WebP and HEIC input works too; the output is always an optimised JPG.

To compress a JPEG, open the JPG in a compressor, set the quality to around 80%, and save the smaller file. Because JPEG is a lossy format, re-encoding at 80% typically cuts the size by half or more while keeping the photo visually identical. Always start from the original JPG.

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

compressornothing stored

Drop your image here

or click to browse

accepts: JPG, JPEG, PNG, WebP, HEIC

75%

How to compress jpeg

  1. Drag and drop your JPEG, or click to browse and select it.
  2. Use the quality slider to shrink the file as far as you want.
  3. Check the live preview and the new file size.
  4. Download your compressed JPG.

What you can use it for

  • Shrink a JPG that's too big to email or upload
  • Compress JPEG photos for a website or blog
  • Re-compress a scanned document to a sensible size
  • Meet a form's JPG size limit without changing dimensions

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, JPEG, PNG, WebP, HEIC as input and gives you a compressed JPG as output. Files are processed in seconds and never stored — we keep nothing once you have your result.

Why JPEG files get so big

JPEG size is driven by three things: pixel dimensions, the quality setting used when the file was saved, and how much fine detail the photo contains. Modern phones save at very high quality and very high resolution — great for archiving, wasteful for sharing. A 12-megapixel photo can carry 6MB of data that no screen, form or chat app will ever show.

Compressing re-encodes the same pixels at a smarter quality level. At quality 80, the JPEG algorithm removes colour detail and texture below the threshold of human vision — which is why the compressed copy looks the same but is a fraction of the size.

Compress JPEG to a specific KB

If a portal gives you a hard number — under 20KB for a signature, under 50KB for an exam photo, under 100KB for a job application — skip the slider and use one of our exact-size pages linked below. They binary-search the quality setting for you and deliver a JPG at exactly the size the form wants.

FAQ

Frequently asked questions

No — they're the same format. JPEG stands for Joint Photographic Experts Group; the three-letter .jpg extension only exists because old Windows systems limited extensions to three characters. This tool compresses both identically.

It depends on how much detail the photo holds and how it was saved. A phone photo saved at maximum quality typically shrinks 5–10× at quality 75–85 with no visible difference. A JPEG that's already been heavily compressed has less left to remove — expect smaller gains, and avoid compressing the same file repeatedly, as quality loss stacks with each pass.

Stay at quality 75 or above and always start from the best copy of the photo you have. JPEG is a lossy format, so some data is always discarded — but above quality 75 the loss sits below what eyes notice at normal viewing sizes. If you need a big reduction, shrinking the pixel dimensions first lets you keep a higher quality setting.

Yes. Drop in a PNG, WebP or HEIC and the tool re-encodes it as an optimised JPG in one step — compressing and converting at once. That's usually the single biggest size win available, since a lossless PNG photo is often 5–10× larger than the same image as a JPG.

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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