Ridimensionatore Immagini — Strumento online gratis
Ridimensiona immagini per pixel o percentuale
Ridimensiona immagini a qualsiasi dimensione. JPG, PNG, WebP supportati. Mantiene la qualità. Nel browser, senza registrazione.
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Free image resizer — by pixels or percent, aspect-ratio safe
Strumentoolis 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. No 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?
Punti chiave
- Image Resizer is a free, browser-based image tool — resize images by pixels or percentage.
- No signup, no downloads, no file uploads. Strumentos run in your browser; the few that need an outside service say so on the page.
- 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 Strumentoolis — 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
- Prezzo
- Gratis — senza limiti, senza filigrana, senza paywall
- Privacy
- Elaborato nel tuo browser. Gli strumenti che richiedono un servizio esterno lo indicano nella pagina. Le visite vengono conteggiate (Google Analytics).
- Piattaforma
- Qualsiasi browser moderno — desktop, tablet o mobile
- Categoria
- Image Strumentos on Strumentoolis
- Offline
- Works offline after first visit (Progressive Web App)
| Caratteristica | Dettagli |
|---|---|
| Strumento | Image Resizer |
| Categoria | Image |
| Registrazione richiesta | No |
| Caricamento file | Nessuno — elaborato nel browser |
| Supporto mobile | Completamente adattivo |
| Costo | Gratis per sempre |
Why Use Image Resizer?
You should try Image Resizer for a quick, private way to resize images by pixels or percentage. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.
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.