Resize Image Online (Free)
Use this resizer when you need exact pixel dimensions, thumbnails for a shop or blog, or smaller images before you compress for email and forms. It runs entirely in your browser—your files never upload to our servers—so it fits product photos, social posts, screenshots, and sensitive documents alike. Pair it with our compress tool when a portal asks for a strict KB limit, or crop first when you only need part of the frame. Whether you are fixing aspect ratio for Instagram, scaling down a hero image for WordPress, or preparing attachments for work, you get a quick download with no account and no watermarks.
Drop your image here, or click to browse
PNG, JPG, WebP or GIF — max 10MB
Related tools
How to resize image
- Upload your image (drag-and-drop or file picker). Everything stays in your browser; we never upload your file.
- Enter target width and height in pixels, or use a percentage scale. Lock aspect ratio when you want the same proportions without stretching.
- Apply the resize and download your image. If a form or site needs a maximum file size in KB, use our compress image tool next—or start from dedicated pages like resize image to 50KB or resize image to 100KB.
Resize image to specific sizes
For strict upload limits, use our size-target tools (same workflow, preset target): resize to 50KB, resize to 100KB. For step-by-step context and tips, read the guides: resize image to 50KB (guide), resize image to 100KB (guide), and resize image to 20KB (guide).
Why resize images online?
Images often need new dimensions for websites, social media, or print. Our free resize image tool changes width and height by pixels or percentage in your browser—no upload to our servers. After resizing, you might compress images to reduce file size, or crop to trim edges. For portraits or products, remove background first. For ID photos, use our official photo maker or rotate & flip if the photo is sideways.
Who should use this tool?
Anyone preparing images for the web, social media (see our resize for Instagram guide), email, or print—designers, bloggers, and small businesses who need exact dimensions without desktop software.
FAQs
Will resizing reduce quality? Making an image smaller (downscaling) is lossless in practice. Making it larger (upscaling) can look soft. For best results, resize to the size you’ll use, then compress if needed.
Can I keep aspect ratio? Yes. Use the scale percentage option or lock aspect ratio when entering width and height so the image doesn’t stretch.
What formats are supported? We support JPG, PNG, WebP, and other common formats. Output matches your input unless you use our convert tool afterward.
Is this tool free? Yes. No signup, no watermarks. Everything runs in your browser and we don’t store your images.
More free image tools
Use these tools together for editing and optimization:
- Compress image
- Convert image to JPG, PNG, WebP
- Crop image
- Rotate & flip image
- Remove background
- Add watermark to image
- Official photo maker
Quality and trust
This page is maintained by the TinyImageKit editorial team and checked against the live tool workflow after major updates. We revise instructions when browser behavior, supported formats, or defaults change so examples stay aligned with actual outputs.
Need help or found an issue? Contact contact@tinyimagekit.com with your browser version and file details.