Crop

Circle crop image Crop image

Optimize

Compress image Remove background Upscale image

Modify

Resize image

Convert

Other

Convert JPG to PDF

Image Resizer Online, Set Exact Pixels

Set custom width and height, keep the aspect ratio, and download as PNG, JPG, WebP, or AVIF. Free, no signup, your image never leaves your device.

or drop the image here

Quick answer

Resize image online free, right in your browser, to the exact pixel dimensions you need for social media, web pages, profile picture uploads, or email. Upload a JPG, PNG, WebP, or AVIF on the page, then type a custom width and height, or pick a quick percent preset: 25%, 50%, 75%, 150%, or 200% of the original. Aspect ratio locks automatically to prevent stretching. A toggle clamps the output when the target is larger than the source, so nothing accidentally blows up. After resizing, choose the output format: PNG for the sharpest quality with a transparent background, JPG for the smallest file, WebP for modern web compression, or AVIF for the most compact result. A quality slider for the lossy formats balances sharpness against file size. Resizing a typical 8 megapixel photo down to 2 megapixels takes about a second on a modern computer. Your image never leaves your device, so it fits developers, photographers, and anyone needing a fast, private pixel change.

How to resize image online in your browser

How to resize image online in your browser

Upload an image to the resize tool and it opens straight on the page. No pixel of your photo is sent anywhere: this is a free online resize tool that runs entirely on your device. You can verify it by opening your browser network panel during an upload, the page loads its own code but zero requests carry your image. Set the target width or height, pick the output format, and the result downloads straight to your computer. The downscaling uses a high-quality method with light sharpening afterward, the same approach professional editors use to resize photos for print and web.

Set exact dimensions for social media or profile picture

Set exact dimensions for social media or profile picture

Type the target width for any social media post or profile picture upload, and the height updates automatically. The aspect ratio lock keeps the image from stretching when you only set one side. To unlock and set both freely, click the chain icon between the two inputs. Five percent presets do the quick math for you: 25%, 50%, 75%, 150%, and 200% of the original. Turn on "Do not enlarge if smaller" so the tool will not invent extra pixels when your target is larger than the source dimensions.

Choose your output format: PNG, JPG, WebP, or AVIF

Choose your output format: PNG, JPG, WebP, or AVIF

Pick the download format on the done screen. PNG keeps the sharpest quality and a transparent background. JPG is smallest for photos where a slight quality drop is fine. WebP gives JPG-class file sizes with better quality retention, and every major browser since 2020 supports it. AVIF produces the smallest output, typically 30 to 50% under JPG at equal quality, though it takes longer to produce on Firefox and older devices. The quality slider applies to JPG, WebP, and AVIF only. PNG ignores it.

Resize vs compress: what is the difference?

Resize vs compress: what is the difference?

Resizing reduces the pixel count in an image. Compression reduces the file size by storing the same pixels more efficiently. Both shrink the file in different ways. Resizing a 4000x3000 photo to 1200x900 makes the image physically have fewer pixels. Compressing a JPG at quality 80 instead of 100 shrinks the file without changing the pixel count. Often you want both: first resize, then lower the quality slider for a smaller final file.

What to expect when enlarging an image

What to expect when enlarging an image

Enlarging an image, say from 1000x750 to 2000x1500, means inventing pixels the original never had. The tool fills them in from the surrounding pixels, but the result will always look softer than a real higher-resolution source. A 2x enlargement looks acceptable for most photos. A 4x enlargement is clearly soft. Past 4x, blur artifacts appear. For AI upscaling that reconstructs detail, use our Upscale 2x tool instead. It works well on photos but cannot recover detail that was never captured.

Which image formats you can resize here

Which image formats you can resize here

Input accepts JPG, PNG, WebP, and AVIF. These four cover all modern photography and web graphics needs, including profile picture uploads on Discord, LinkedIn, and Instagram. GIF is partial: only the first frame opens. HEIC, TIFF, PSD, and RAW are not direct, convert them first with the Convert tool. Output can be any of the four regardless of input, so you can also use this as a one-step converter plus resizer. PNG output keeps transparent background pixels untouched.

How it works

  1. Upload your image

    Drop a JPG, PNG, WebP, or AVIF on the page, or click to pick one. It opens instantly on your device, nothing uploads to a server.

  2. Set the size

    Type the target width or height in pixels, the other side follows to keep the aspect ratio, or tap a 25 to 200% percent preset.

  3. Pick the output format

    Choose PNG, JPG, WebP, or AVIF on the done screen, and set the quality slider for the lossy formats.

  4. Download the result

    Save the resized image straight to your device. The whole process runs free online in your browser in seconds.

Need to compress, crop, or convert instead?

Resize changes the pixel count. To shrink the file without changing dimensions use Compress. To frame a specific area use Crop image. To switch format only without resizing use Convert.

Compress image Crop image

Frequently asked questions

How to resize image online?

Upload your image to the resize tool, type the target width or height in pixels (the other side follows to keep the aspect ratio), or pick a 25 to 200% percent preset. Choose the output format on the done screen and download. The whole process runs free online in your browser in seconds.

Does resizing affect image quality?

Downsizing keeps excellent quality thanks to a high-quality downscaling method, the standard used in professional photo software. Upsizing always causes some softness because pixels must be invented. PNG output keeps every pixel exactly. JPG, WebP, and AVIF expose a quality slider so you control the trade-off between sharpness and file size.

Which formats are supported?

Input accepts JPG, PNG, WebP, and AVIF (plus GIF, first frame only). Output can be PNG, JPG, WebP, or AVIF. HEIC, TIFF, PSD, and RAW are not direct, convert them first with the Convert tool. All four output formats work in every modern browser.

Can I keep the image aspect ratio?

Yes, the aspect ratio lock is on by default. When you enter one dimension, the other updates automatically to keep the ratio. To unlock and set both independently, click the chain icon between the two inputs. Useful when you need a specific display size and accept some image distortion.

What are the recommended profile picture sizes for each platform?

Instagram profile picture: 320x320 px (displayed as 110x110). Twitter or X: 400x400 px. Facebook: 170x170 displayed but upload 360x360 for retina. LinkedIn: 400x400 minimum, 800x800 recommended. Discord: 128x128 minimum, 1024x1024 recommended. WhatsApp: 500x500 px. Type each size into the width and height fields and the tool returns exactly those pixels.

How many images can I resize at once?

This tool processes one image at a time. Batch processing is not supported by design. For many images at once, a desktop app that uses every processor core will be faster. Each image here only takes seconds, so one-by-one stays quick for regular use.

Is the resize tool really free and private?

Yes. The tool is free with no signup, and your image never leaves your device. All the resizing happens on your own computer or phone, so nothing is uploaded, stored, or logged on any server. You can confirm this by watching your browser network panel during an upload.

Does resizing remove image metadata like EXIF?

Yes. When the tool re-saves your image at the new size, camera metadata such as EXIF, GPS location, and color profiles is dropped. The output is a clean file with just the pixels. If you need to keep metadata, resize with a desktop editor that preserves it.

Can I resize an image to a percentage instead of exact pixels?

Yes. Five quick presets scale the image to 25%, 50%, 75%, 150%, or 200% of the original size. They are handy when you do not need an exact pixel target, just a relative change. For exact dimensions, type the width and height directly into the fields.

What is the maximum image size I can resize?

The tool handles images up to about 25 megapixels comfortably. Very large images may hit browser memory limits, especially on phones, and could fail to open. On desktop you have more room. If a large image will not load, try a smaller source or a computer with more memory.

Can I resize a transparent PNG and keep the transparency?

Yes. Choose PNG as the output format and the transparent background is preserved exactly. WebP and AVIF output also support transparency. JPG does not, so a transparent image saved as JPG gets a solid background. For logos and graphics with transparency, keep PNG, WebP, or AVIF.

Does the resize tool work on mobile?

Yes. The tool runs in any modern mobile browser on iPhone and Android, no app needed. Upload from your photo library, set the size, and download back to the device. Very large images may be limited by phone memory, but typical photos resize in a few seconds.

The details

Notes from the team on craft, formats, and the small decisions behind a good round crop.

How high-quality downscaling keeps photos sharp
The downscaling method this tool uses is the same standard found in Adobe Photoshop, GIMP, and most professional photo software. For each pixel in the smaller image, it samples a window of nearby source pixels and blends them with weighting that favors the closest ones. The result is the best practical trade-off between sharpness and the jagged edges or moire patterns that cruder methods leave behind. Light sharpening runs afterward to counter the natural softening that any size reduction introduces. The output looks crisp at 100% zoom, which matches what web publishing expects.
Why the aspect ratio lock matters
The aspect ratio lock prevents distortion. When it is on, changing one dimension updates the other automatically to keep the original width-to-height ratio. The human eye is sensitive even to small distortions of faces, buildings, and other recognizable shapes, so this lock is the foundation of most photo editing. Unlocking it lets you set both dimensions freely, which is useful for banner ads where the composition needs a specific ratio independent of the original. The "Do not enlarge if smaller" toggle adds a safety layer: when on, the tool refuses to grow the image beyond the source's native size.
Format choice: PNG vs JPG vs WebP vs AVIF
PNG keeps every pixel exactly as stored, with no quality loss. It is ideal for screenshots, large flat-color graphics, logos, and any image with a transparent background. JPG uses lossy compression with a quality scale of 1 to 100. Files are typically 5 to 10 times smaller than PNG for photos, with quality loss invisible around 80 to 90. WebP, from Google in 2010, gives JPG-class file sizes with better detail retention, supports transparency, and ships in every major browser since 2020. AVIF is the newest of the four and produces files 30 to 50% smaller than JPG at the same visual quality. The trade-off is that it takes longer to produce, especially on Firefox and older mobile devices.
Upscaling pitfalls and when to use AI
Increasing an image's dimensions requires inventing pixels that never existed. The tool fills them from nearby source pixels and produces smooth but soft results. A 2x upscale is typically acceptable for photos. A 4x upscale shows noticeable softening. Past 4x, blur artifacts appear and textures, edges, and fine details look indistinct. For AI upscaling, which uses trained models to reconstruct plausible detail from surrounding context, use the dedicated Upscale 2x tool. AI models work well on photos but still cannot recover detail that was never in the source, especially text and fine patterns. Stick with downsizing whenever the source has enough pixels.
Performance: where this tool wins, where it loses
The tool is built for single images up to about 25 megapixels. Beyond that, browser memory limits on phones may cause crashes. On a modern desktop, resizing an 8 megapixel source down to 2 megapixels and saving as WebP takes about a second. Saving the same image as AVIF takes a few seconds, since AVIF is heavier to produce. On a mid-range Android phone, the same operation takes a few seconds for WebP and over ten for AVIF. The tool handles one file at a time and does not do batches. For large batches, a desktop app that uses every processor core will be faster.
Privacy: why staying on your device matters
Most online image resize tools send your file to a server for processing. That creates a trail: a temporary copy lives on that company's infrastructure, subject to their logging, retention policies, and the laws of their jurisdiction. This tool processes everything locally in your browser. Your file never leaves the device. You can confirm it by opening your browser network panel and watching an upload: you will not see any outgoing request carrying the image, only the initial page load and its static assets. Nothing to delete afterward, because nothing was ever sent.