Image Compressor — Reduce Image Size Online
Compress JPEG, PNG, WebP and resize images instantly — 100% in your browser. No upload, no watermark, no sign-up. Drag & drop up to 10 images, pick quality & format, see live savings, and download.
Keywords: compress image, reduce image size, image compressor, JPG compressor, PNG compressor, WebP converter, resize image online — private & free.
Drop images here
JPEG, PNG, WebP, GIF, BMP — up to 10 at once, max 20 MB each. Stays on your device.
Or click to browse
Compression Settings
Tip: 80–85% is the sweet spot — looks identical, ~50–70% smaller. Only affects JPEG/WebP; PNG is always lossless.
Keeps aspect ratio. Never upscales — if image is smaller than target, it stays as-is.
Private by design
- No upload — runs offline in your browser
- EXIF/GPS stripped automatically
- No watermark, no sign-up, no limits
No images yet
Drop JPEG, PNG or WebP images on the left. You'll see a side-by-side preview, original vs compressed size, and savings % for each — then download in one click.
What is image compression?
Image compression reduces file size so pages load faster, emails send quicker, and storage goes further. Lossy formats like JPEG and WebP discard imperceptible detail to shrink files dramatically — ideal for photos. Lossless PNG keeps every pixel perfect, best for graphics, logos, and screenshots with text.
This tool uses your browser's native Canvas encoder — the same engine behind Chrome and Firefox — so quality matches desktop apps. No server, no queue, no watermark. Works offline.
How to compress an image
- Drop images onto the dashed area or click Choose images — up to 10 at once.
- Adjust Quality (80–85% is usually perfect), pick Output Format (WebP is smallest; JPEG is most compatible), and optionally Resize to your target width/height.
- Compare Original vs Compressed — check file size, dimensions, and savings % live.
- Click Download per image or Download all for the batch.
JPEG vs PNG vs WebP — which to choose?
JPEG
Best for photos. Smallest lossy files, no transparency. Use 80–85% quality.
PNG
Best for logos, icons, screenshots. Lossless + transparency, but larger.
WebP
Modern best-of-both: 25–35% smaller than JPEG, supports transparency & lossless.
FAQ — Image Compressor
Is my image uploaded to a server?
No. Everything runs 100% in your browser using the Canvas API. Your image is never uploaded, stored, or sent anywhere — it stays on your device. You can even go offline after the page loads and it still works.
Which formats are supported?
Input: JPEG, PNG, WebP, GIF, BMP, AVIF (any format your browser can display). Output: JPEG, PNG, or WebP. JPEG and WebP support quality control (1–100%); PNG is lossless and always exports at maximum quality. WebP typically gives 25–35% smaller files than JPEG at the same visual quality.
Will compressing reduce image quality?
JPEG/WebP are lossy — lower quality = smaller file. At quality 80–85, most photos look identical to the original but are 50–70% smaller. PNG is lossless — no quality loss at all. Use the live preview and size comparison to find the sweet spot before downloading.
Does resizing help file size?
Yes — the biggest win. A 4000×3000 photo resized to 1200px wide is ~10× smaller before any compression. If you only need web/social size, resize first. This tool keeps aspect ratio by default so nothing gets stretched.
Is EXIF/metadata kept?
No — canvas export strips EXIF (GPS location, camera model, etc.) automatically. This is good for privacy and saves a few extra KB. If you need to keep metadata, use a desktop tool like ExifTool instead.
Pro tip — resize before you compress
A phone photo at 4032×3024 resized to 1200px wide is already 70% smaller — before quality even matters. For web, blog, or social, Max side 1200–1600px is usually perfect and saves the most.