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Compress Picture

Shrink file size instantly — free, no upload

Compress picture size by up to 90%

Drop any JPEG, PNG or WebP image and reduce its file size in seconds. The quality slider lets you balance size vs. sharpness — all processing stays in your browser.

No signup, no file-size cap, no watermark. Works on any device with a modern browser.

  • Reduce file size
  • No quality loss
  • No upload
  • Free forever
  • Batch up to 30
  • Works offline

Drop pictures here, click to browse

JPG, PNG, WebP · up to 30 files at once · stays in your browser

photo.jpg2.4 MB412 KB−83%

Lower = smaller file. 75 is a safe default for photos.

Resizing the longest edge often shrinks files dramatically.

How to compress picture size

Three steps to a smaller file — everything runs in your browser.

  1. Add your pictures

    Drag up to 30 images into the drop zone, or tap to pick them from your device. JPEG, PNG, WebP and AVIF are all accepted. You can also paste from the clipboard with Ctrl+V (⌘V on Mac).

  2. Adjust the quality slider

    The default quality of 75 typically cuts file size by 60–80% with no visible difference. Move the slider lower for smaller files, higher to keep more detail. The output size updates live for every picture.

  3. Download the smaller files

    Check the before-and-after preview, then save each result individually or hit Download All. No watermark is added and the compressed pictures are never stored on a server.

Why use this tool to compress picture size

See the size drop instantly
Every picture shows its original and compressed file size side by side. You know exactly how many KB or MB you saved before downloading.
No server upload
Compression runs on your device using the browser's Canvas API. Your pictures never leave your computer, so there is no upload wait and no privacy risk.
No file-size cap on input
Because nothing is uploaded, there is no 2 MB or 10 MB upload limit. Drop a 50 MB camera RAW export — it processes the same as a small thumbnail.
Batch processing
Compress up to 30 pictures at once. Each file is processed at the quality you set, and you can download all results in one click.
Choose your output format
Keep the original format or switch to WebP for an extra 25–35% file-size saving at the same visual quality.
Works offline
Once the page loads, the compressor keeps working even without an internet connection. Ideal for on-the-go editing.

Frequently asked questions

How much can I compress a picture's file size?
Most photos shrink by 60–90% at the default quality of 75. The exact reduction depends on the image content, resolution, and how heavily it was compressed before. The output size is shown live next to every file.
Does compressing picture size reduce quality?
At quality 75 and above, the difference is invisible to the naked eye for most photos. You can use the before/after slider to check every result. Lower quality settings trade some sharpness for a smaller file.
What is the best format for the smallest file size?
WebP produces the smallest files for photographic content — typically 25–35% smaller than JPEG at the same visual quality. You can switch the output format in the tool. PNG is lossless and produces larger files; use it only when you need transparency.
Is there a limit on how many pictures I can compress?
No daily or monthly limit. You can compress 30 pictures per batch, and repeat as many times as you want. The tool is completely free with no usage quota.
Can I compress picture size on my phone?
Yes. The tool runs in any modern mobile browser — Safari on iPhone, Chrome on Android, or any other browser. No app to install.
Are my pictures uploaded to a server?
No. Everything runs locally in your browser. Your files are decoded, re-encoded at the quality you chose, and downloaded — they never leave your device.
Can I compress pictures to a specific file size?
Yes — use our Compress to 100 KB or Compress to 20 KB pages, which automatically find the highest quality that fits your target size.
What picture formats are supported?
Input: JPEG, PNG, WebP and AVIF. Output: JPEG (default) or WebP. Switch the output format in the toolbar to get the smallest possible file.

Compress picture size — how it works

When a picture comes out of a camera or screenshot tool, it is usually saved at maximum quality with no compression. That means a single phone photo can be 5–15 MB — far too large for email attachments, web pages, or form uploads that cap at 1–2 MB.

This tool re-encodes your picture at a lower quality setting using the browser's built-in Canvas API. The re-encoding discards redundant data the eye does not notice, producing a file that looks identical but weighs a fraction of the original.

Because the entire process runs on your device, there is no upload queue, no server-side limit, and no privacy concern. Your pictures stay on your machine from start to finish.

Need an exact file-size target? Try Compress to 100 KB . Want to compress a specific format? Compress JPEG shows a live quality table tuned for JPG files.

Your pictures stay on your device

All compression runs locally using the Canvas API. No file is uploaded, stored, or analysed. The tool keeps working even if you go offline after loading the page.