Free Image Compressor & Converter — Compress Images Online | TrafficLab
Free · 100% Browser-Based

Compress Images Free & Convert Online.

Compress, resize and convert images free — in your browser, with no uploads. Drop one image or a whole folder and optimize them in bulk. No signup, no watermarks, no limits.

Drop your image here

or click to browse. Supports JPG, PNG, WebP, GIF, BMP, AVIF, SVG.

Bulk supported — drop as many as you need

Lower quality = smaller file size (lossy). PNG ignores quality — always lossless.

Best for switching PNG → WebP, JPG → WebP, or WebP → PNG without changing dimensions.

Images are scaled proportionally. Set one dimension only to preserve aspect ratio automatically.

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Compress Images Free — Free Image Compressor & Converter

TrafficLab's free image compressor runs entirely in your browser. Compress JPG, PNG, and WebP images online — resize them, convert them between formats, and shrink file size without uploading anything to a server. Your images never leave your device, and the tool works even offline once the page loads.

Whether you need to compress an image free for email, convert PNG to WebP for a website, resize a product photo for an online store, or optimize a whole folder of images in one go, this is the fastest path from bloated files to lean, optimized assets — with no signup and no watermarks.

Three Simple Modes

  • Compress — reduce file size with a quality slider. Best for shrinking photos and screenshots without changing dimensions.
  • Convert — switch between WebP, JPG, PNG and AVIF. Best for changing format without touching size or quality.
  • Resize — scale down to a max width or height. Best for shrinking huge camera photos to a web-friendly dimension.

Why Use This Free Image Compressor?

  • 100% free — no signup, no email, no premium tier, no watermarks.
  • Browser-based and private — your images never leave your device.
  • No file limits — compress one image or a hundred at once.
  • Multiple formats — WebP, JPG, PNG and AVIF output.
  • Live preview — see each image's size reduction before you download.
  • Bulk download — grab everything as a ZIP, or download individually.

How to Compress an Image for Free

  • Drop your image into the tool (or click to browse).
  • Pick Compress as your mode.
  • Adjust the compression level slider — 70–85% is a good starting point for photos.
  • Choose your output format — WebP gives the smallest file, JPG is universal.
  • Click Compress Image and download the result.

Which Format Should I Choose?

  • WebP — best balance of quality and size. 30–70% smaller than JPEG at the same quality. Supported by every modern browser.
  • JPEG — universal compatibility. Larger than WebP at the same quality, but works everywhere.
  • PNG — lossless, keeps transparency. Use for logos, icons and screenshots.
  • AVIF — next-generation. 20–50% smaller than WebP, but newer browser support (Chrome, Firefox, Safari 16+).

Common Use Cases

  • Compress photos for email — hit attachment size limits without losing quality.
  • Convert PNG to WebP for a website migration.
  • Resize camera images before uploading to a CMS.
  • Optimize product photos for an ecommerce storefront.
  • Shrink screenshots for documentation and tutorials.
  • Prepare social media images at consistent dimensions.
  • Batch process an entire image folder before publishing.

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If you're looking for any of these, you're in the right place:

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Frequently Asked Questions

Is this image compressor really free?
Yes. TrafficLab's image compressor and converter is completely free. No signup, no email, no premium tier, no watermarks, no file limits.
Are my images uploaded to a server?
No. All processing runs in your browser using the Canvas API. Your images never leave your device — nothing is uploaded, logged or stored.
How do I compress an image for free?
Drop your image into the tool, choose Compress as your mode, adjust the compression level slider, select an output format like WebP or JPG, and click Compress Image. The optimized image downloads in seconds.
Can I compress and convert images in bulk?
Yes. Drop dozens or hundreds of images at once — the tool processes them all in one batch and lets you download individually or as a ZIP.
Does compression reduce image quality?
WebP, JPG and AVIF use lossy compression at the quality level you choose. WebP at 80% quality is nearly indistinguishable from the original at 30–70% smaller size. PNG is lossless and preserves every pixel.
What's the difference between compressing and resizing?
Compression reduces file size by re-encoding more efficiently — pixel dimensions stay the same. Resizing changes the actual width and height of the image. For the smallest possible file, do both: resize first, then compress.
What's the difference between WebP and AVIF?
WebP is supported by all modern browsers since 2020 and offers 30–70% smaller files than JPEG. AVIF is newer — supported by Chrome, Firefox, and Safari 16+ — and offers 20–50% smaller than WebP, but with slower encoding and less universal compatibility.
Can I use the output commercially?
Yes. Your images remain yours. TrafficLab doesn't add watermarks or claim any rights over your content.
Does this work on mobile?
Yes. The tool is fully responsive and works on iOS Safari, Chrome for Android, and every modern mobile browser. Processing is slower on phones but perfectly usable.
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