Compress JPGRight in Your Browser

Reduce JPG file sizes for email attachments, web uploads and storage — processed entirely on your device, with a quality level you control.

Updated January 2026

100% Private — Files never leave your device

Drag & drop files here

or click to browse

Your files never leave your device

Choose settings and click Compress

1. Add your files

Drag & drop or click to browse. Multiple files supported.

2. Pick your settings

Choose the output format or compression level.

3. Download

Files convert on your device and download instantly.

About the format

JPEG, standardized in 1992, is a lossy format with an adjustable quality dial — recompressing at a lower setting trades invisible detail for dramatically smaller files.
  • JPEG was published as ITU-T T.81 in 1992 by the Joint Photographic Experts Group and encodes images in 8×8-pixel blocks.
  • Photographs tolerate roughly 10:1 compression before artifacts become noticeable — the documented design target of the standard.
  • Cameras and phones save JPEGs near maximum quality by default, which is why most photos still shrink dramatically with no visible change.

About this conversion

JPEGs from cameras and phones are saved at quality levels chosen to survive future editing — far higher than sharing requires. Recompressing them at a sensible quality routinely cuts 50-90% of the file size with no change you can see at normal viewing size, which is the difference between an email attachment that bounces and one that sends.

Typical jobs this handles: photo batches that need to fit an email or messaging cap, images for a website where load time matters, scanned paperwork produced at absurd quality by a scanner app, and phone photos eating cloud storage quota. Drop in the batch, pick a level, download the results (individually or as a ZIP).

How to choose the setting: Balanced is visually transparent for photographs and should be your default. Smallest is for thumbnails, previews and hard size limits — inspect the result for softening in fine texture before shipping it anywhere important. And remember JPEG compression is cumulative: compress the final version of an image, not one you'll keep editing and re-saving, and never re-compress the same file repeatedly to chase a few more kilobytes.

Compression happens entirely in your browser — the photos never upload, which is exactly what you want for pictures of documents, family and everything else a photo roll contains. If a result somehow isn't smaller than the original, we hand back the original unchanged.

Frequently Asked Questions

What quality setting should I use?

Balanced (recommended) is visually indistinguishable from the original for photos while cutting most of the size. Use Smallest for thumbnails or when size matters more than detail.

Is it safe to convert photos online?

Yes. Unlike traditional online converters, this tool never uploads your files. The conversion runs entirely inside your browser using WebAssembly, so photos never leave your device — you can even disconnect from the internet after the page loads and it still works.

Is this converter really free?

Yes — completely free, with no sign-up, no watermarks, and no file-per-day limits. Because conversion happens on your own device, there are no server costs to pass on to you.

Every conversion runs 100% in your browser — zero files uploaded, ever.

How to verify it yourself →

More Tools

Who we are — and what we refuse to do

We're a small team that got tired of "free" converters treating your files as the product.

So we built Converting Free the only way we'd trust ourselves: the whole toolbox — image, document and archive converters, compressors, time-zone and unit tools, calculators and text utilities — does its work on your device. Open your browser's network tab while you convert something; you'll watch nothing leave.

We don't run ads, we don't set tracking cookies, and we don't operate a server that stores files. That isn't a privacy-policy promise — it's how the site is engineered. There is simply nowhere for your data to go.

Why we built it

Search for "convert X to Y" and the top results usually want something from you before they'll lift a finger:

  • Your file, uploaded to a server you know nothing about
  • Your patience, spent on queues, captchas and "premium speed" upsells
  • Your data, harvested by the trackers stacked beneath the ads

We think a converter should be a tool, not a trade.
Ours takes nothing from you: no uploads, no accounts, no tracking.