Forms ask for a photo of exactly 200 x 230 pixels under 50 KB. Instagram wants a 4:5 portrait. Your phone photo is 4000 pixels wide and 5 MB. This image resizer takes one picture and handles all of it: crop with a draggable box, set the pixel size or a percentage, pick a format, and (for JPG and WebP) tell it the maximum file size in KB.
Start from a preset for passport photos, common government form sizes or social posts, or type your own numbers. The result updates as you change anything, with a preview and the exact pixel size and file size before you download.
Everything runs in your browser. Your picture is not uploaded, which matters for passport photos, signatures and ID scans.
Resize by pixels or by percent
By pixels you type the width and height you want. With "Keep proportions" ticked, changing one side recalculates the other from the picture's shape. A 4000 x 3000 photo set to 1000 pixels wide becomes 1000 x 750, because 1000 x 3000 / 4000 = 750.
By percent scales the picture (or your cropped area) by a single number. 50% of 4000 x 3000 is 2000 x 1500. Use 100 for the same size and values above 100 to enlarge.
Untick "Keep proportions" only when you need an exact width and height that do not match the picture's shape. The page warns you if that stretches the picture, because stretched faces and circles look wrong. Cropping first to the right shape is almost always better than stretching.
Aspect ratio and cropping
Aspect ratio is width divided by height. A square is 1:1, a typical phone photo is 4:3, a widescreen video frame is 16:9, and a passport photo of 35 x 45 mm is 7:9.
Tick "Crop the picture first", choose a shape, then drag the box over the part you want. Drag a corner to resize it, drag inside to move it, or focus the box and use the arrow keys. With a fixed shape, the box keeps that ratio as you resize. Choose "Free" for any shape, or "Custom ratio" and type something like 4:5 or 35:45.
The order matters: the tool crops first, then resizes the cropped area to your size. For a 200 x 230 photo, pick the preset, move the box over the face, and the output is exactly 200 x 230.
Make a file smaller than a given KB
Many portals reject a photo over a limit like 50 KB or 100 KB. Tick "Limit the file size", enter the maximum in KB, and the tool tries different quality levels to find the best-looking JPG or WebP that fits. It first tests high quality, then lowest quality, then narrows in on the highest quality that still fits the limit.
With "reduce the pixel size" ticked (the default for your own sizes), the tool keeps quality at about 55% or better and makes the picture smaller in pixels until the file fits, because a smaller, clean picture usually looks better than a large, blocky one. Untick it if your form needs exact pixel dimensions; the tool then goes down to 10% quality, and if the file is still over the limit it tells you so you can crop tighter or choose smaller dimensions yourself. The presets for exact form sizes switch pixel reduction off for you.
Some forms also state a minimum, such as 20 KB. Enter it in the optional minimum box and the page warns you if the result falls below it. A picture that is too small in KB usually needs more pixels, or a less compressed save.
KB means 1,000 bytes here, on purpose. Operating systems and portals disagree on whether 1 KB is 1,000 or 1,024 bytes. Counting 1,000 is the stricter reading, so a file under 50 KB by this tool is also under 50 KB by the other. Windows may show it as about 48.8 KB.
About the presets
The presets fill in the pixel size, crop shape, format and (where given) the KB limit in one step.
- Passport photo 35 x 45 mm is 413 x 531 pixels at 300 dpi (35 mm is 1.378 inches, times 300). This is the common print size in India, the UK and much of the world.
- 2 x 2 inch photos are 600 x 600 pixels at 300 dpi. The US State Department's online digital photo rules allow a square image from 600 x 600 up to 1200 x 1200 pixels; check travel.state.gov for the current file size and format rules.
- Indian exam form sizes (photo 200 x 230 px 20 to 50 KB, signature 140 x 60 px 10 to 20 KB, thumb impression 240 x 240 px 20 to 50 KB, declaration 800 x 400 px 50 to 100 KB) are the figures commonly published in bank recruitment notices. They change between exams and years, and we could not confirm them from an official notice for this page. Always read the notification for your exam and edit the numbers if they differ.
- Social media sizes such as 1080 x 1080 and 1080 x 1350 for Instagram, 1200 x 630 for link previews and 1280 x 720 for YouTube thumbnails are recommendations that platforms revise. The tool treats them as starting points.
Passport and visa photos also have rules the tool cannot judge: plain light background, face size and position, no filters. Resize and crop here, but check the official checklist yourself.
Enlarging pictures
Making a picture bigger cannot add detail. A 200-pixel-wide photo stretched to 800 pixels will look soft. The tool warns when a preset is larger than your picture. Start from the largest original you have.
JPG, PNG or WebP?
Use JPG for photos and for most forms. Use PNG for screenshots, logos and anything that needs transparency; it has no quality or KB limit options because it is lossless. Use WebP for your own website if your audience's browsers support it and your platform accepts it. If you choose JPG for a picture with transparency, the see-through areas are filled with the background colour you pick, white by default.
Does DPI matter?
For screens and uploads, only the pixel width and height matter. A "300 dpi" label inside a file does not change how many pixels it has. DPI only tells a printer how large to print those pixels: 413 x 531 pixels at 300 dpi prints 35 x 45 mm. This tool sets the pixel size, which is what online forms check.
Worked example: a 200 x 230 pixel photo under 50 KB
- Add a 3000 x 4000 selfie.
- Choose the preset "Photo 200 x 230 px, 20 to 50 KB". The crop shape becomes 200:230 and the limit fills in 50 and 20.
- Drag the box over your face and shoulders.
- The result shows 200 x 230 px, JPG, a size of a few KB to about 20 KB depending on the picture, and a green "Within the size limit" note if it fits the range.
- If it shows a "smaller than the minimum" warning, which can happen with a plain background, raise the quality by unticking the size limit or choosing a different crop with more detail, then check the size again.
Resizing on iPhone and Windows
iPhone: Open this page in Safari, choose a photo from your library, set the size and download. The download goes to the Files app (Downloads folder), and you can save it to Photos from there.
Windows: Drag the picture onto the page. Paint also has a Resize button for a quick pixel change, but it has no KB limit or crop shapes.
Frequently asked questions
Is my image uploaded?
No. Cropping, resizing and compressing all run in your browser. Nothing is sent or stored.
How do I resize an image to 200 x 230 pixels under 50 KB?
Choose the preset "Photo 200 x 230 px, 20 to 50 KB". It sets the crop shape, the size and the KB limit. Move the crop box over your face, check the result line, and download.
Why does the tool say the file is still over my limit?
Even the lowest quality was larger than the limit at that pixel size. Allow pixel reduction, crop tighter, or enter smaller dimensions.
Why is my picture stretched?
You unticked Keep proportions and entered a shape different from the crop. Tick it again, or crop to the target shape first.
Can I resize several pictures at once?
This page handles one picture at a time so the crop and size limit stay accurate. For batches in a new format, use the Image Converter.
Can it open HEIC photos?
Not directly. Convert them with the HEIC to JPG tool first.
What does 1 KB mean here?
1,000 bytes, the stricter reading, so the file passes portals that count 1,000 or 1,024.
Sources & Methodology
- MDN: HTMLCanvasElement.toBlob() - how the browser creates JPG and WebP files at a given quality
- MDN: CanvasRenderingContext2D.drawImage() - cropping and scaling in one step
- U.S. Department of State: Passport photo requirements - square digital photo, 600 x 600 up to 1200 x 1200 pixels (check the page for file size and format)
- YouTube Help: Add custom thumbnails - 16:9 recommendation, 640 px minimum width, 2 MB limit on mobile
- Sizes for Indian exam forms, India passport print size and social media posts are common published or recommended figures, not confirmed against an official notice. Check your own form.
Method: the tool crops the chosen box from the original pixels, scales it to the output size with the browser's high-quality smoothing and encodes it. For a size limit it searches quality between 10% and 95% (about nine encodes) and keeps the highest quality at or below the limit. When pixel reduction is allowed, quality is kept at 55% or more and the pixel size is reduced in steps, estimated from the file size, until the file fits. 35 mm = 35 / 25.4 inches, times dpi, rounded.
Data accurate as of: November 2026