Reduce image size
Compress and resize your images in seconds. Everything happens in your browser: your photos are never uploaded. To crop, convert HEIC or wipe EXIF data: Crop and convert images.
JPEG, PNG, WebP, GIF, AVIF… several images at once
How to reduce an image properly
- Reduce the dimensions first: a phone photo is often 4,000 × 3,000 pixels, while a screen rarely shows more than 1,920. Going down to 1,920 px already divides the file size by 3 to 5.
- Quality 75 to 85%: the difference is invisible to the naked eye for a photo, and the size drops sharply. Use the before/after comparison to check.
- Pick the right format: JPEG for photos (works everywhere), WebP or AVIF for websites (30–50% smaller), PNG for screenshots, logos and transparent images. A transparent image converted to JPEG gets a white background.
- Target size: set a maximum (for example 500 KB for an online form or 2 MB for an email); the tool finds the best quality within that limit.
Frequently asked questions
Are my images uploaded?
No. Compression is done by your browser, on your device; no image is sent or stored. Once the page has loaded, the tool even works offline.
Is the photo's information kept?
No: EXIF metadata (camera, date, GPS location) is removed when the image is re-encoded, which protects your privacy when you share a photo. The photo's orientation is applied first.
How are PNG files reduced?
Like TinyPNG: the image is converted to a palette PNG with up to 256 colours chosen to suit it (transparency is kept), with light dithering when needed. Logos and screenshots often shrink by 50–80% with no visible difference. An image that already has 256 colours or fewer is converted with no loss at all. The quality slider sets the number of colours: 256 from 70 to 100 (recommended), then a smaller palette below that. If the result is larger than the original, the original is kept. For a photo saved as PNG, JPEG or WebP will still be much smaller.
Which formats are supported?
Any format your browser can display: JPEG, PNG, WebP, GIF (first frame only), BMP, AVIF, and HEIC in Safari. AVIF export depends on the browser.
Which settings for which use?
- Emailing photos: 1,920 px, JPEG, quality 80%. A 4 MB phone photo drops to about 400–600 KB; ten photos fit in one message.
- Online forms (documents limited to 500 KB or 1 MB): choose “target size” and enter the limit; the tool finds the best quality that fits. Keep at least 1,280 px so a document stays readable.
- Website or blog: 1,280–1,920 px depending on your layout width, WebP or AVIF, quality 75%. Pages load faster, which search engines take into account.
- Social media: 1,080 px wide is enough for Instagram; networks recompress uploads anyway.
- Screenshots and logos: keep PNG. The tool converts it to a palette PNG (up to 256 colours, transparency kept), like TinyPNG: a 32 KB logo drops to about 10 KB with no visible difference. JPEG, on the other hand, creates halos around text.
A worked example
A 4,000 × 3,000 px photo weighs about 4 MB as JPEG. Resized to 1,920 × 1,440 px it has 4.3 times fewer pixels; at quality 80% it weighs around 400 KB, about ten times less, with no visible difference on a computer screen. As WebP, expect another 25–35% saving.
Checking the result
- Open the before/after comparison and look at tricky areas: sky, skin, fine text. If blocks or halos appear, raise the quality by 5 points.
- For printing, don't shrink too much: allow about 300 pixels per inch, i.e. 3,500 px wide for a good A4 print.
- Always keep the original: compression discards information that can't be recovered.
Privacy
Processing happens on your device: no image is uploaded. EXIF metadata, including the GPS location where the photo was taken, is removed on re-encoding: useful before posting a photo taken at home. To crop, convert an iPhone HEIC or rotate an image, use Crop and convert an image.
Guide written and checked by Erwan Hautot · updated 6 November 2026.