Graviton

Photos and signatures that pass strict upload limits

Application portals often ask for a JPG under 20, 50 or 100 KB. Graviton finds the sharpest version that fits, and your photo and signature never leave your device.

Compress a form photoCompress a signature

Recommended settings

Settings for each upload on your form

Start from the tool in the last column. If your form’s limit is different, type it into Maximum size. “Shrink dimensions if needed” is off by default; if Graviton offers “Shrink dimensions to fit”, accept it unless the form sets exact pixels.

  • Signature

    Forms often ask for 10–20 KB. Crop close to the signature first.

    Format
    JPG
    Goal
    Exact file size: 20 KB
    Resize
    Off (shrink to fit if offered)
    Compress a signature to 20 KB

  • Exam or job application photo

    Limits of 20–50 KB are common. Graviton lands just under the maximum.

    Format
    JPG
    Goal
    Exact file size: 50 KB
    Resize
    Off (shrink to fit if offered)
    Compress a photo for exam and job forms

  • Photo with a 20 KB limit

    Crop to face and shoulders, so the few kilobytes go into your face rather than the background.

    Format
    JPG
    Goal
    Exact file size: 20 KB
    Resize
    Off (shrink to fit if offered)
    Compress an image to 20 KB

  • Visa, ID and job portal photos

    Many portals cap photos at 100 KB, but rules vary. Check the exact limit on your form.

    Format
    JPG
    Goal
    Exact file size: 100 KB
    Resize
    Off (shrink to fit if offered)
    Compress an image to 100 KB

  • Scanned certificates and documents

    Enter your form’s limit, then check that small text is still readable before you upload.

    Format
    JPG
    Goal
    Exact file size: the form’s limit
    Resize
    Off (shrink to fit if offered)
    Compress an image to 200 KB

  • iPhone photo, no size limit

    For forms that reject HEIC. The size presets above also read HEIC, so you don’t need to convert first.

    Format
    JPG
    Goal
    Quality 85
    Resize
    Off
    HEIC to JPG converter

Rules differ between forms and change from year to year. Always check the current file type, size and dimensions on your form before you upload.

Workflow

From photo to accepted upload

  1. 1

    Read the form’s rules

    Note the file type, the maximum and minimum size in KB, and any required pixel dimensions or background color.

  2. 2

    Take a clean photo or scan

    For a signature, use a dark pen on plain white paper, in daylight and without shadows. For a photo, use a plain, light background and face the camera.

  3. 3

    Crop it first

    Graviton doesn’t crop, so crop to your face and shoulders, or close around the signature, in your phone’s or computer’s photo editor.

  4. 4

    Open the matching preset

    Signature: 20 KB. Exam photo: 50 KB. Any other limit: type it into Maximum size. iPhone HEIC photos go straight in and come out as JPG.

  5. 5

    Set exact pixels if required

    If the form asks for exact dimensions, crop to that shape, turn on Resize and enter them, and leave “Shrink dimensions if needed” off.

  6. 6

    Download and upload

    The download button shows the final file size. Sign in with a free account, save the JPG and upload it to your form.

Why applicants use it

Under the limit, and private

Your ID never leaves your device

Photos and signatures are compressed in your browser. Only when you download do Graviton’s servers receive a one-way fingerprint of the file, never the image, and they don’t store it.

Lands just under the limit

Graviton tries several qualities and keeps the sharpest version that fits, instead of making you guess one setting.

Counts KB the strict way

Here 1 KB is 1,000 bytes, so a file under 50 KB also passes forms that count 1,024 bytes per kilobyte.

Reads iPhone photos

HEIC photos from an iPhone are read directly and saved as JPG, the format most forms ask for.

Shrinks only if you let it

Your photo keeps its width and height by default. If fitting would need heavy compression, Graviton offers to scale it down a little instead, which looks better.

Location removed

GPS coordinates and camera data are stripped from every re-encoded image, so your photo carries no hidden details.

FAQ

Questions about form uploads

My form says 20–50 KB. What should I set?

Set 50 KB. Graviton keeps the highest quality that fits, so most photos land just under 50 KB. If yours comes out below the minimum, start again from a larger, sharper photo.

The portal says my file is too large, but Graviton says it fits. Why?

Graviton counts 1 KB as 1,000 bytes, the stricter way, so a file under 50 KB here is under 50 KB on any form. If the upload is still rejected, check the file type (most forms want JPG or JPEG) and whether the form also sets pixel dimensions.

What if my form needs exact pixel dimensions?

Crop the photo to the same shape first, such as 200 × 230, in a photo editor. Turn on Resize, enter the width and height, and leave “Shrink dimensions if needed” off, as it is by default, so the photo doesn’t get smaller. Graviton never enlarges, so start from a photo at least that large.

Is my ID photo or signature uploaded anywhere?

No. The image is processed in your browser and never leaves your device. Nothing is sent while you compress. When you download, Graviton’s servers receive only a one-way fingerprint of the file, to count and approve the download, and don’t store it. You can confirm it in your browser’s network tab.

Do I need an account?

Not to compress: you can try every size and setting and compare before and after without one. To download, yes, a free one with no card. It covers 3 downloads a day, enough for a photo, a signature and one more file, and downloading the same image again that day on the same device, at another size or quality, doesn’t count twice.

Tools for this

Presets for application forms

Get your photo under the limit

Pick the size your form asks for. Your photo and signature stay on your device.

Compress a form photo