About this image resizer
This is a free online image resizer made by IssueBadge. Drop in a JPG, PNG, WebP, or GIF (up to 10MB), enter the dimensions you need, and download the resized file. Everything runs in your browser using the HTML5 Canvas API, so your photos never get uploaded to anyone's server.
The tool was built to support people creating digital badges and certificates, but it works for anything: social media posts, product photos, blog hero images, profile pictures. No signup. No watermark. No usage cap.
How to resize an image in 5 steps
- Upload your image. Drag the file into the drop zone above or click to browse. Maximum file size is 10MB. Supported formats are JPG, PNG, WebP, and GIF.
- Set the new dimensions. Type a width and height in pixels, choose a percentage to scale by, or pick one of the social media presets. Leave "Maintain aspect ratio" on if you want the image to stay proportional.
- Pick a resize method. Stretch fills the new size and may distort the image. Fit keeps the original proportions and adds padding. Crop & Center keeps the proportions and trims the edges. For most cases, Crop & Center looks the most natural.
- Choose the output format and quality. Use JPG for photographs, PNG when you need transparency, WebP when you want the smallest file. The quality slider only applies to JPG and WebP — PNG is always lossless.
- Download. Click the Download button. The browser builds the resized image on your device and saves it to your default downloads folder.
Common image dimensions reference
Quick reference for the sizes you'll resize to most often. The tool has presets for all of these.
| Use case | Width × Height (px) | Aspect ratio |
|---|---|---|
| Instagram Post (square) | 1080 × 1080 | 1:1 |
| Instagram Story / Reel | 1080 × 1920 | 9:16 |
| Facebook Post (link share) | 1200 × 630 | 1.91:1 |
| Facebook Cover Photo | 820 × 312 | 2.63:1 |
| LinkedIn Post | 1200 × 627 | 1.91:1 |
| LinkedIn Banner | 1584 × 396 | 4:1 |
| Twitter / X Post | 1200 × 675 | 16:9 |
| YouTube Thumbnail | 1280 × 720 | 16:9 |
| YouTube Channel Art | 2560 × 1440 | 16:9 |
| Pinterest Pin | 1000 × 1500 | 2:3 |
| Open Graph / website share image | 1200 × 630 | 1.91:1 |
| Email header | 600 × 200 | 3:1 |
| Digital badge (recommended) | 512 × 512 | 1:1 |
Stretch vs Fit vs Crop & Center
Stretch
The image fills the new dimensions exactly. If the new aspect ratio is different from the original, the image will look squashed or stretched. Only useful when the input and output ratios already match.
Fit
The whole image is preserved, with padding added on the shorter side to reach the target dimensions. Pick a background color (or transparent for PNG/WebP). Best for logos and product shots where you can't lose any pixels.
Crop & Center
The image is scaled to cover the new dimensions and the edges are trimmed. The center of the image stays in frame. Best for social media headers, profile photos, and any time the subject is roughly centered.
JPG, PNG, or WebP — which to pick
JPG — best for photographs and any image with smooth color gradients. Adjustable quality. No transparency support. Files are typically 10–25% the size of an equivalent PNG.
PNG — best when you need transparency (logos, icons, badges with cutout backgrounds) or pixel-perfect output (screenshots, diagrams). Larger files than JPG or WebP.
WebP — best when file size matters most. Supports transparency and produces files about 25–35% smaller than JPG at similar quality. Supported by every modern browser. The trade-off is editing apps still lag behind in WebP support.
Frequently asked questions
Is this image resizer really free?
Yes. There is no signup, no watermark, and no usage cap. The tool runs in your browser and is provided free by IssueBadge.
Are my images uploaded to a server?
No. The resizer uses the HTML5 Canvas API to process the file on your device. Your image never leaves the browser, which is why it works offline once the page is loaded.
What file formats are supported?
Input: JPG, PNG, WebP, GIF (up to 10MB). Output: JPG, PNG, or WebP. WebP gives the smallest file size for the same visual quality.
How do I resize without distorting the image?
Keep "Maintain aspect ratio" enabled and use the Fit or Crop & Center method. Stretch will distort the image when the new ratio differs from the original.
What is the maximum image size?
The upload is capped at 10MB and the output at 5000×5000 pixels. These limits keep the tool fast on average laptops and phones.
What's the right size for social media?
Common sizes: Instagram Post 1080×1080, Instagram Story 1080×1920, Facebook Post 1200×630, LinkedIn Banner 1584×396, Twitter/X Post 1200×675, YouTube Thumbnail 1280×720. The tool includes one-click presets for each.
Does it work on a phone?
Yes. The interface is responsive and the resizer runs in mobile browsers (iOS Safari and Chrome on Android tested).
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Need to issue digital badges or certificates with your resized images? Try IssueBadge — the platform behind this tool, built for organizations issuing verifiable digital credentials.