Redimensionneur d'Image — Outil en ligne gratuit
Redimensionne les images en pixels ou pourcentage
Redimensionne les images à n'importe quelle dimension. JPG, PNG, WebP supportés. Maintient la qualité. Dans ton navigateur, sans inscription.
📚 En savoir plus
Free image resizer — by pixels or percent, aspect-ratio safe
Outilolis Image Resizer changes image dimensions in your browser using the Canvas API. Input exact pixel dimensions or a percentage scale. Aspect-ratio lock keeps proportions correct automatically. Non upload to any server.
How to use this tool
- 1
Upload your image
Drop or pick a JPG, PNG, or WebP. The original dimensions will appear automatically.
- 2
Enter target dimensions
Type width, height, or a percentage. Aspect-ratio lock keeps proportions — toggle off to stretch.
- 3
Download the resized image
Canvas re-renders at the new size and gives you a download link. Quality is preserved for JPG/WebP output.
Common image sizes in 2026
- Hero banner — 1920×1080
- Blog featured / OG image — 1200×630
- Instagram post (square) — 1080×1080
- Instagram story — 1080×1920
- LinkedIn banner — 1584×396
- YouTube thumbnail — 1280×720
- Favicon — 512×512 (for modern browsers)
- Profile avatar — 400×400
Frequently Asked Questions
Does resizing reduce quality?
What resampling algorithm is used?
How is aspect ratio calculated?
Is my image uploaded anywhere?
What are common image sizes?
Can I resize multiple images at once?
À retenir
- Image Resizer is a free, browser-based image tool — resize images by pixels or percentage.
- Non signup, no downloads, no file uploads — your data stays on your device.
- Works on desktop, tablet, and mobile. Install as a PWA for offline access.
How to Use Image Resizer
- Open the tool: Launch Image Resizer on Outilolis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
Image Resizer — Quick Facts
- Prix
- Gratuit — sans limites, sans filigrane, sans paywall
- Confidentialité
- 100% dans le navigateur — aucune donnée n’est envoyée à un serveur
- Plateforme
- Tout navigateur moderne — desktop, tablette ou mobile
- Catégorie
- Image Outils on Outilolis
- Hors ligne
- Works offline after first visit (Progressive Web App)
| Caractéristique | Détails |
|---|---|
| Outil | Image Resizer |
| Catégorie | Image |
| Inscription requise | Non |
| Téléversement de fichier | Aucun — traité dans le navigateur |
| Compatible mobile | Entièrement adaptatif |
| Coût | Gratuit pour toujours |
Why Use Image Resizer?
You should try Image Resizer for a quick, private way to resize images by pixels or percentage. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.
On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.