Skip to content
ToolQivo

JPEG Compressor

Shrink JPEG photos with a quality slider you can see.

Image Tools Reviews Free · no sign-up

Drop an image here, or click to choose one

JPEG in, smaller JPEG out · compressed on your device, never uploaded

Quick Tool Overview

The JPEG Compressor puts the quality slider, the preview and the resulting file size in front of you at the same time, because that is the only way to judge a compression setting well. Most photographs stop improving somewhere around 82 to 88, and coming down from the 95 a camera saves at typically halves the file for no visible change.

What it does
Re-encodes a JPEG at a lower quality
You give it
A JPEG photo and a quality setting
You get back
A smaller JPEG with the saving shown
Best for
Page speed, email attachments and storage
Image Tools Free, unlimited use No sign-up Runs in your browser

About the JPEG Compressor

Compressing a JPEG is a judgement call, not a setting, and the only way to make it well is to see the picture and the file size at the same time.

That is what this does: drag the quality and both the preview and the resulting size update together. Most photographs stop looking any better somewhere between 80 and 88, and dropping from the 95 that cameras and editors default to typically halves the file for no visible change. A zoomed view is available for checking the details that give compression away first — skies, skin and flat gradients, where blocking appears before it does anywhere else.

Key features of the JPEG Compressor

Size updates as you drag

The output size and the preview move together, so the trade-off is visible rather than guessed at.

Zoom into the hard parts

Skies, skin and flat gradients show compression first — a magnified view checks them before you commit.

Sensible starting point

Opens at the quality where most photographs stop looking any better, instead of a number that wastes bytes.

Warns about double compression

Re-compressing an already-compressed file loses detail for almost no saving, and the page says when that is happening.

Nothing is uploaded

Encoding runs on a canvas in your browser, so there is no queue and no file size cap.

How to use the JPEG Compressor

  1. 1

    Add the JPEG

    Drop in the photo. Its current size and dimensions are shown at once.

  2. 2

    Drag the quality down

    Watch the file size fall and the preview beside it. Start around 82.

  3. 3

    Check the difficult areas

    Zoom into a sky or a face — that is where compression shows first.

  4. 4

    Download when it looks right

    Save the version at the point you stopped.

Frequently asked questions

Between 80 and 88 for photographs. Cameras and editors usually save at 92 to 98, which spends a lot of bytes on detail nobody can see. Below about 70, blocking becomes visible in skies and skin.

Reviews of the JPEG Compressor

What people who use the JPEG Compressor think of it. Reviews come from visitors and are posted as written.

No ratings yet

Yours would be the first.

  • 5 0 reviews rated 5 stars
  • 4 0 reviews rated 4 stars
  • 3 0 reviews rated 3 stars
  • 2 0 reviews rated 2 stars
  • 1 0 reviews rated 1 star

Write a review

Used this tool? Your rating helps the next person decide.

Your rating

Plain text only — links, email addresses and HTML are not accepted. Your name and review are shown publicly; nothing else is collected. See the privacy policy.

0 reviews

Newest first

No reviews yet

Be the first to rate the JPEG Compressor. It takes half a minute and no account.

Write the first review

More image tools