NextTool

Image Compressor

How to use

Reduces the file size of images without a visible drop in quality. This helps photos load faster on websites and fit within email limits. Drop your images, adjust the quality slider, and download the smaller versions. You can compare the before and after sizes.

Image Tools PopularLocal only

Step 1 of 3: Upload

  1. 1
  2. 2
  3. 3

Step 1 of 3 · Upload

Select an image to compress

Processed on your device

Why use this tool

  • A quality slider with the before and after file sizes and the percentage saved, so you can stop at exactly the size you need.
  • Save as JPG for photos, PNG for graphics with transparency, or WebP for the smallest files on a website.
  • The original stays untouched; you download a new copy.
When to use this
  • Shrinking product photos before uploading them to a marketplace listing with a file size cap
  • Reducing image weight on a blog or portfolio site to improve Core Web Vitals scores
  • Compressing photo attachments so they fit under an email provider size limit
  • Trimming screenshots down before pasting them into a bug report or ticket

Free and private. Everything runs on your own device, with no account and no uploads.

Large photos slow down websites, bloat email attachments, and eat into mobile data plans, and this compressor shrinks JPEG, PNG, WebP, and AVIF files while letting you preview the quality tradeoff before you commit. Every pixel is processed in your browser using the Canvas API, so the original file never leaves your device.

Some quality is traded for smaller file size, but the tool uses lossy compression with a live preview so you can pick the point where savings are worthwhile without visible artifacts.

JPEG, PNG, WebP, and AVIF are all supported for both input and compressed output.

The tool runs entirely in your browser, so the practical limit is your device memory rather than a server upload cap, most photos up to tens of megabytes take a second or two.

Yes, the compressor works on modern mobile browsers, though very large images may take a moment longer to process than on desktop.

How it works
  1. 1

    Add your image

    Drag a JPEG, PNG, WebP, or AVIF file onto the drop zone, or click to browse and select one.

  2. 2

    Adjust the quality slider

    Drag the compression slider and watch the live before/after file size update in real time.

  3. 3

    Compare visually

    Check the preview to make sure detail loss is acceptable at your chosen quality level.

  4. 4

    Download the result

    Click download to save the compressed file directly to your device.

More in Image Tools
Resize Image
Resize images to exact pixel dimensions or by percentage - all in browser
Crop Image
Crop any image to a precise selection with aspect ratio locking
Rotate Image
Rotate images by any angle to fix a sideways photo or straighten a horizon
Flip Image
Mirror images horizontally or vertically
Read about this
Camera RAW files, and the JPG hidden inside every one3 miniPhone photos in HEIC: opening, sharing and converting them4 minBase64 images: when inlining helps and when it costs you4 min
Pro tips
  • ·Push the quality slider down gradually while watching the preview, most photos hold up fine down to 60-70% quality with no visible artifacts
  • ·WebP and AVIF typically compress smaller than JPEG at the same visual quality, so switch formats if size matters more than compatibility
  • ·PNG compression gains are limited on photos; convert to JPEG or WebP first if you need aggressive size reduction on photographic content