Image Compressor
Shrink images for the web without uploading them anywhere — compression happens entirely in your browser. Choose WebP or JPEG, set quality, download.
Slow site because of heavy images? I optimise entire websites.
Get a Free Website AuditWhy image compression is the #1 speed fix for most websites
On almost every slow website I audit, images are half the problem — a single uncompressed phone photo can weigh more than an entire well-built page. Heavy images slow your Largest Contentful Paint, a Google ranking signal, and burn mobile data on Nepali 4G connections. Compressing images is the highest return-on-effort speed fix there is: run your site through my Website Speed Checkerand you'll likely see image audits at the top of the fix list.
| Format | Best for | Rule of thumb |
|---|---|---|
| WebP | Almost everything on the web | 30–70% smaller than JPG/PNG at the same quality — the default choice. |
| JPG | Photos where WebP isn't possible | Quality 70–85 is visually identical to 100 at a fraction of the size. |
| PNG | Screenshots, logos, transparency | Use only when you need transparency or pixel-perfect UI images. |
| AVIF | Cutting-edge builds | Even smaller than WebP, slower to encode; great with a build pipeline. |
| SVG | Logos, icons, illustrations | Vector — infinitely sharp and usually under 10 KB. |
How small should web images be?
Practical budgets: a full-width hero image should land under 200 KB, content images under 100 KB, and thumbnails under 30 KB. Resize the image to the size it actually displays at (a 4000px photo shown at 800px wastes 80%+ of its bytes), then compress — this tool does both in one step, right in your browser, so your files never leave your device. Bonus: it also produces the JPG-under-200KB files that .np domain registration requires for documents.
One-time fix vs. fixed forever
Compressing today's images helps until someone uploads next month's 6 MB photo. A properly built site makes speed automatic: WordPress converts uploads to WebP and serves responsive sizes, Next.js optimizes images at request time. Setting that up is part of every build in my website development service in Nepal, and for existing sites my maintenance service keeps performance from decaying over time.
Compress once — or build a site that stays fast forever.
I build and maintain websites with automatic image pipelines, caching and 90+ mobile scores — so speed isn't a chore you repeat every month.
Frequently asked questions
+Does compressing images reduce quality?
At sensible settings, not visibly. Lossy compression at quality 70–85 removes detail your eye can't perceive at normal viewing sizes — typically cutting file size by 60–90%. This tool shows a live preview, so you can judge quality before downloading.
+Is it safe to compress images with this tool?
Yes — everything happens in your browser using the Canvas API. Your images are never uploaded to any server, which also makes it faster than upload-based compressors and safe for private documents and photos.
+What image format is best for websites in 2026?
WebP is the practical default — every modern browser supports it and it's 30–70% smaller than JPG/PNG. Use SVG for logos and icons, PNG only when you need transparency in raster images, and AVIF if your build pipeline supports it.
+Do large images hurt Google rankings?
Yes, indirectly but reliably: oversized images slow your Largest Contentful Paint, one of Google's Core Web Vitals ranking signals, and increase bounce on mobile. Image optimization is usually the first fix on any speed audit I run.
+How do I automatically compress images on WordPress?
Use a plugin like WebP Express, ShortPixel or your caching plugin's image feature to convert uploads to WebP and generate responsive sizes automatically. Or have it built into the site properly — that's part of my website development and maintenance services.
What this tool does
- 100% private — files never leave your device
- WebP & JPEG output
- Quality slider + optional resize
- Before/after size comparison
How to use it
- 1Choose an image from your device
- 2Pick format, quality and max width
- 3Compare sizes and download