Resize Image Online
Resize JPG, PNG, WebP, and AVIF images to any pixel size or social-media preset. Aspect-lock toggle, batch processing, and 100% private — your photos never leave your browser.
How to resize an image
Three clicks from any source size to the exact dimensions you need.
- 1
Drop your images
Drag and drop one or many images. JPG, PNG, WebP, AVIF, GIF, BMP, and TIFF are all supported. There's no upload — files stay on your device.
- 2
Pick dimensions or a preset
Type an exact width and height in pixels, or use one of the social-media presets. Toggle the aspect-lock to keep proportions intact, or unlock it to force exact dimensions.
- 3
Resize and download
Hit Resize. Output preview shows the new dimensions and file size. Download a single file or grab the whole batch as a ZIP.
Social media image size cheat sheet
Pick a preset in the tool above or type these dimensions manually. All sizes are the current platform recommendations as of 2026.
| Platform / placement | Recommended size | Aspect ratio |
|---|---|---|
| Instagram square post | 1080 × 1080 px | 1:1 |
| Instagram portrait post | 1080 × 1350 px | 4:5 |
| Instagram story / Reel cover | 1080 × 1920 px | 9:16 |
| Facebook post (link share) | 1200 × 630 px | 1.91:1 |
| Facebook cover photo | 820 × 312 px | 2.63:1 |
| Twitter / X post image | 1200 × 675 px | 16:9 |
| Twitter / X header | 1500 × 500 px | 3:1 |
| YouTube thumbnail | 1280 × 720 px | 16:9 |
| LinkedIn banner | 1584 × 396 px | 4:1 |
| Pinterest pin | 1000 × 1500 px | 2:3 |
| TikTok cover | 1080 × 1920 px | 9:16 |
Print & document sizing reference
Multiply inches by 300 to get the pixel count for print-ready images. Lower DPIs (150) work for posters viewed from a distance.
| Use case | Pixel dimensions |
|---|---|
| 4×6 photo print | 1800 × 1200 px @ 300 DPI |
| 5×7 photo print | 2100 × 1500 px @ 300 DPI |
| 8×10 photo print | 3000 × 2400 px @ 300 DPI |
| A4 page (full bleed) | 2480 × 3508 px @ 300 DPI |
| US Letter (full bleed) | 2550 × 3300 px @ 300 DPI |
| Business card | 1050 × 600 px @ 300 DPI |
Why resize with Editryk
A simple resizer that respects your bandwidth and your data.
Aspect-ratio lock
Toggle on to keep proportions, off to force exact pixels — clear visual indicator of which mode is active.
Social media presets
One-click sizing for Instagram, Twitter/X, Facebook, YouTube, LinkedIn, Pinterest, and TikTok.
Batch resize
Resize hundreds of images in a single pass with the same target dimensions, downloaded as one ZIP.
All major formats
JPG, PNG, WebP, AVIF, GIF, BMP, and TIFF supported on input and output.
Pixel-precise output
Type exact width × height in pixels — no rounding, no surprise re-encoding artifacts.
Privacy-first
All resizing happens in your browser via HTML Canvas. Files never leave your device.
Who uses an online image resizer?
Web developers produce responsive image sets (1× / 2× / 3×) for srcset attributes without bouncing through Photoshop.
Social media managers post-ready sizing for every major platform in one place — drop a 4K source in, get the right dimensions out for each channel.
E-commerce stores enforce consistent product-photo dimensions across the entire catalog so listings look uniform on every device.
Content creators prep YouTube thumbnails, Pinterest pins, and TikTok covers in seconds without paying for desktop software.
Email marketers shrink hero images to 600 px wide so Outlook doesn't auto-scale and break the layout.
Bloggers and writers resize feature images to a consistent width for WordPress, Ghost, or Medium without needing an editor plugin.
Frequently asked questions
Everything worth knowing before you resize your first image.
How do I resize an image without distorting it?
Keep the aspect-lock toggle on. The tool then scales width and height together so the image keeps its original proportions. Unlock it only when you specifically need a fixed pixel size and you're okay with the image stretching.
Can I resize images in bulk?
Yes. Drop in dozens or hundreds of images at once. The same target dimensions (or aspect-locked width) apply to every image, and the entire batch downloads as a single ZIP.
Are my images uploaded to a server?
No. All resizing happens locally inside your browser using HTML Canvas. Your files never leave your device, which makes this safe for product photography, ID scans, and unreleased assets.
What's the maximum image size I can resize?
There's no hard cap from Editryk. Modern browsers handle 8000×8000 pixel images comfortably. Hardware-accelerated canvases top out around 8192–16384 pixels per side; if you exceed that, the browser silently downscales.
Does resizing also compress the file?
Yes — fewer pixels mean a smaller file, even at the same quality. For the deepest savings, resize first and then run the result through the Compress Image tool to also re-encode the format.
Will resizing reduce my image quality?
Downscaling looks essentially identical to the eye when you stay above 50% of the original dimensions. Upscaling beyond the source resolution always softens — for that, use a dedicated AI upscaler instead.
What size should I use for Instagram, Twitter, or LinkedIn?
See the social-media reference table on this page. The short version: Instagram square 1080×1080, Instagram portrait 1080×1350, Twitter post 1200×675, LinkedIn banner 1584×396, YouTube thumbnail 1280×720.
Can I resize a transparent PNG?
Yes. Transparency is preserved through the resize. Output stays as PNG (or WebP) and the alpha channel is untouched.
Does the tool support HEIC files from iPhone?
If your browser can preview the HEIC, yes. Safari handles HEIC natively. Chrome and Firefox don't, so convert HEIC to JPG with the Convert Image tool first, then resize.
Keep going with related tools
Pair this tool with the rest of Editryk's privacy-first toolkit.
Ready to resize your first image?
No signup, no upload, no watermark. Scroll up and drop a file — the resized output is ready in milliseconds.
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