Resize Images.
Pixel-Perfect. Every Time.
Set exact width and height for any PNG, JPEG, or WebP — with optional aspect ratio lock. Zero server uploads. Instant results.
Drop your image here
Dimensions
Output
Resized · 640 KB
saved 80%
All processing runs in your browser — never uploaded.
0
Server uploads
Runs entirely in your browser
0%
Aspect ratio preserved when locked
Proportions never distorted
0
Formats supported
PNG, JPEG, WebP
Why it matters
Why Resize Matters
Social media ready
Every platform has different image specs. Resize once to the exact pixels each platform expects — no more cropped thumbnails or blurry profile images.
Smaller email attachments
A 4000×3000 photo is overkill for email. Resize to 1280×960 and the file drops from 3 MB to under 400 KB — perfect for any inbox.
Precise design specs
Building a UI? Exporting assets at exactly 2× or 3× for Retina displays requires pixel-perfect resizing. FileCrisp delivers exact dimensions every time.
Step by step
From Upload to Download in Seconds
Four steps. No sign-up, no queue, no waiting.
- 01
Upload your image
Drag and drop any PNG, JPEG, or WebP image into the upload zone — or click to browse. Your file stays in your browser from the moment you select it.
Drop your image here or click to browse
photo.jpg · 3.2 MB - 02
Set dimensions (width/height)
Enter your target width and height in pixels. These are the maximum bounds FileCrisp will resize to — the exact output depends on your aspect ratio lock setting.
Dimensions
1280px720px - 03
Toggle aspect ratio lock
With lock ON, FileCrisp fits your image inside the target box while preserving proportions. With lock OFF, the image is stretched to match both dimensions exactly.
Aspect ratio
Lock aspect ratio
Keeps original proportions
Output will fit 1280 × 720 while preserving your image's original ratio.
- 04
Download your result
Hit Resize Image and your result is ready instantly. All processing happens in your browser using createImageBitmap and OffscreenCanvas — nothing is ever uploaded.
Resized!
photo_1280x720.jpg
3.2 MB
Before
−80%
Saved
640 KB
After
Platform guide
Social Media Dimension Cheat Sheet
Copy these exact dimensions into the resize tool. These are the recommended specs for each platform as of 2026.
Instagram Post
Feed posts, profile grid
YouTube Thumbnail
Video thumbnails, channel art
Twitter / X
Link cards, in-tweet images
Article covers, post images
Post images, link previews
OG Image
Social share previews for any website
Lock aspect ratio ON: FileCrisp fits your image inside the target box keeping proportions. The output matches one dimension and scales the other proportionally. Lock OFF: stretches to exact dimensions — useful when you need pixel-perfect output regardless of the original proportions.
FAQs
Frequently Asked Questions
Everything you need to know — answered plainly.
Resize your image now
Free, private, instant — no account needed.