Compresseur d'Images
Compress PNG, JPG, WebP or AVIF. Same pixels and colours as the original, or pick another format while shrinking file size.
Déposez un fichier ici ou cliquez pour téléverser
PNG, JPG, WebP or AVIF · max 50 MB · same format by default, or pick another below
Traité dans votre navigateur - votre fichier ne quitte jamais cet appareil.
Aperçu
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À propos de cet outil
Image compression reduces a photo's file size by changing how it is encoded, while keeping the pixel dimensions the same and, as far as possible, the visible quality too. It is worth separating the two things people often confuse: resizing changes how many pixels an image has, while compressing changes how efficiently those pixels are stored. A 4000-pixel-wide photo compressed heavily is still 4000 pixels wide. Modern phone cameras are the usual reason people end up here - they produce files of several megabytes each, which are too large to email, slow to load on a web page, and quick to fill up storage. Because photographs contain enormous amounts of detail the eye cannot track precisely, they can usually be reduced by around 88% before any difference becomes visible. Everything happens in your browser: the images are decoded, re-encoded and downloaded on your own device, with nothing uploaded.
Optimiser une image pour votre site web
L'ordre compte : redimensionnez d'abord pour que la compression ait moins de pixels à traiter, et convertissez en dernier. Chaque étape ci-dessous ouvre l'outil correspondant.
- 1TéléverserDéposez votre JPG ou PNG directement dans l'outil.
- 2RedimensionnerAjustez-la à la taille où elle est réellement affichée.Ouvrir
- 3CompresserRéduisez le fichier sans perte de qualité visible.Vous êtes ici
- 4Convertir en WebPGénéralement 25-35 % plus petit qu'un JPG.Ouvrir
- 5TéléchargerEnregistrez-la et mettez-la sur votre site.
Nettoyer une photo avant de la partager
Supprimez les données que vous ne vouliez pas publier, masquez ce qui est privé, puis réduisez-la pour la messagerie.
- 1Supprimer les métadonnéesLa localisation GPS et les infos de l'appareil photo sont intégrées par défaut.Ouvrir
- 2Flouter les visagesMasquez toute personne n'ayant pas accepté d'être publiée.Ouvrir
- 3CompresserRendez-la assez légère pour l'envoyer instantanément.Vous êtes ici
Sauver une image basse résolution
Agrandissez d'abord, puis nettoyez - agrandir un fichier compressé amplifie ses artefacts.
- 1AgrandirAgrandissez 2x ou 4x avec Real-ESRGAN.Ouvrir
- 2Affiner le renduAjustez le contraste et la couleur après l'agrandissement.Ouvrir
- 3CompresserUn fichier agrandi est volumineux - réduisez-le à nouveau.Vous êtes ici
Transformer une photo iPhone ou AVIF en quelque chose que tout le monde peut ouvrir
Les formats d'appareil photo modernes sont efficaces mais de nombreuses applications ne peuvent pas les lire. Convertissez, puis ajustez la taille selon la destination.
- 1HEIC vers JPGPour les photos venant directement d'un iPhone.Ouvrir
- 2AVIF vers JPGPour les images enregistrées depuis un site moderne.Ouvrir
- 3RedimensionnerAdaptez-la à sa destination.Ouvrir
- 4CompresserLe JPG est plus lourd que l'original - réduisez-le.Vous êtes ici
Comment utiliser cet outil
- Add your imageDrag it in or browse to select. PNG, JPG, WebP and AVIF are supported, and the download stays in the same format.
- Watch the previewThe tool re-encodes on your device and shows a live before/after slider. Pixel size stays the same; only the file gets smaller.
- Check the savingTypical photos land around 88% smaller. Drag the slider at 100% zoom if you want to confirm sharpness.
- DownloadSave the compressed file. Your original is left exactly as it was.
Pourquoi l’utiliser
- Photos typically shrink by around 88% with no visible blur at normal viewing size.
- Dimensions are preserved, so the image stays as large as it was - only the file size changes.
- Runs on your device, so private photos are never uploaded to anyone else's server.
- Same-format output: JPG stays JPG, PNG stays PNG, WebP stays WebP.
- No sign-up, no daily quota and no watermark on the output.
Usages courants
- Getting photos under an email attachment limit without cropping or resizing them.
- Speeding up a website, where oversized images are the most common cause of slow pages.
- Fitting images inside an upload limit on an application, listing or government form.
- Reducing a phone photo library before backing it up or sharing it.
- Preparing product photos for a shop listing, where load speed affects both ranking and conversion.
Conseils pour de meilleurs résultats
- Compare at 100% zoom, not fit-to-screen. Compression artefacts are invisible when the image is scaled down on screen.
- If the image is far larger than it will ever be displayed, resize it first - that saves more than compression alone and costs no quality.
- Photographs compress well; screenshots, logos and text-heavy graphics do not. Those are better kept as PNG.
- Keep your originals. Compression is one-way, and you may need the full-quality file later for print or re-editing.
- If you need to hit an exact number like 100 KB, use the Resize Image to KB tool instead.
Erreurs à éviter
- Compressing an already-compressed image repeatedly. Each pass adds new artefacts on top of the old ones, permanently.
- Expecting the image to look smaller on screen. Compression changes file size, not dimensions - use the Image Resizer for that.
- Pushing quality to the minimum. Blocking and colour banding appear long before the file gets meaningfully smaller.
- Compressing images destined for print. Print needs the full-quality original; heavy compression shows up clearly on paper.
- Compressing logos and screenshots as JPG. Sharp edges and text develop halos - keep those lossless.
Formats pris en charge
- JPG
- JPEG
- PNG
- WebP
Options disponibles
- Quality
- Output format
- Max width / height
Questions fréquentes
Add your image above. It is re-encoded in the same format in your browser, then you compare before and after and download. Nothing is uploaded and there is no queue.
Yes. No account, no daily limit, no watermark and no paid tier holding back the useful settings.
It is tuned like ILoveIMG: same pixels, no downscale, and a high quality floor so text and edges stay sharp. Use the before/after slider at 100% zoom if you want to confirm.
Photographs typically drop by around 88%. Images with lots of fine detail or noise compress less; already-compressed files and some screenshots save less. Smooth images with large areas of similar colour compress more.
No. The width and height in pixels stay exactly the same. If you want the image to be physically smaller as well, use the Image Resizer - combining both usually gives the largest saving.
No. Compression uses your browser's own canvas and image encoder, so the files stay on your device throughout. The page keeps working even with the network disconnected.
Use the Resize Image to KB tool instead. It targets a precise file size by adjusting quality automatically, rather than asking you to find the right setting by hand.
Yes, though the saving depends on the content. Photographs saved as PNG shrink dramatically; logos and screenshots that are already efficiently stored as PNG will not gain much.
Yes. Add as many as you like and they are processed one after another in your browser. Large batches use memory, so close other heavy tabs if you are doing hundreds.
Re-encoding generally drops most embedded metadata. If removing location data is your actual goal, use the Image Metadata Remover, which is built for that and tells you what it stripped.
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