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Photo & Signature Resizer

Resize and compress a photo or signature to the pixels and KB an exam or job form asks for, in your browser.

By Nitin Raturi · Last reviewed

Input

How to use the Photo & Signature Resizer

Make a photo or signature the pixel size and file size an application form asks for.

  1. Choose a form preset, or enter the width, height and KB limits from your notice.
  2. Choose your photo or signature file.
  3. Pick how to fit it if its shape differs from the target.
  4. Check the preview and the file size, then download the JPEG.
  5. Upload it to the form and confirm the portal accepts it.

Good to know

  • Nothing is uploaded: resizing happens in your browser.
  • Tap the ⓘ next to any field for a short guide to it.

Resize and compress a photo or signature to a form’s pixel size and KB limit.

Runs in your browser. Nothing you type is uploaded or saved in the link.

Form preset

Sizes copied from 7 official notices, each dated. Choosing one fills in the fields below; you can change any of them.

How to fill it in

  • Pick the exam and the item (photograph, signature and so on), or “Custom” to set your own.
  • The note under the list shows what the notice says, where it is from and its date.

Keep in mind: Rules change between exams and years. Check the notice for the exam you are applying to before you upload.

200 × 230 pixels (preferred), 20–50 KB, recent passport-style colour photo. Source: Institute of Banking Personnel Selection (IBPS), Notification CRP PO/MT-XVI (Probationary Officers/Management Trainees, vacancies 2027-28), dated 1 Jul 2026; checked 3 Nov 2026. Open the notice

Check the notice for your own exam before uploading; rules change.

Photo or signature

The image to resize. It is read and processed on your device; it is never uploaded.

How to fill it in

  • JPEG, PNG, WebP, GIF or BMP, up to 25 MB. iPhone HEIC photos open only in browsers that can show them; otherwise save as JPEG first.
  • Scan or photograph a signature in black ink on plain white paper, in good light.

Tip: Phone photos are turned upright using the orientation saved by the camera.

Width (pixels)

How wide the output image is, in pixels.

How to fill it in

  • A whole number from 16 to 4000.
  • Notices often say “preferred” size; the portal may accept others, but matching it is safest.

Example

The IBPS PO/MT-XVI photograph preset is 200 pixels wide.

Height (pixels)

How tall the output image is, in pixels.

How to fill it in

  • A whole number from 16 to 4000.

Example

The IBPS PO/MT-XVI signature preset is 60 pixels high.

Fit

What to do when your image has a different shape from the target.

How to fill it in

  • Crop to fill: exact size; equal amounts are trimmed from the longer sides.
  • Fit with white bars: exact size; the whole image is kept and white bars fill the gap.
  • Keep proportions: no trimming or bars; the image is shrunk to fit inside the width and height.

Example

A 4,000 × 3,000 phone photo into 200 × 230: cropping keeps the middle 2,609 × 3,000 pixels; bars add 40 pixels above and below; keeping proportions gives 200 × 150.

Tip: For a face photo, crop your picture yourself first so the face is centred.

Maximum size (KB)

The largest file the form accepts.

How to fill it in

  • A whole number from 1 to 5,000.
  • To be safe whichever way the portal counts, 1 KB is taken as 1,000 bytes here.

Example

50 KB means at most 50,000 bytes.

Minimum size (KB)

The smallest file the form accepts. Use 0 if there is no minimum.

How to fill it in

  • A whole number, 0 or more, below the maximum.
  • To be safe, 1 KB is taken as 1,024 bytes here. A file that is too small is padded with blank comment data, which does not change the picture.

Example

10–20 KB for a signature means 10,240 to 20,000 bytes.

Result

Target
200 × 230 px (crop to fill), 20–50 KB, JPEG
Allowed file size
20,480 to 50,000 bytes

Choose a photo or signature to see the result here.

ChangelogHow we test this toolEmbed this tool

How this calculator works

  1. Step 1Set the targetPixels and KBPick a dated preset or type the numbers from your notice.
  2. Step 2Fit the shapeCrop, bars or keepYour image is drawn onto a canvas of the target size.
  3. Step 3Find the qualityUp to 10 triesThe highest JPEG quality that stays under the maximum.
  4. Step 4Meet the minimumLossless paddingIf the file is too small, blank comment data is added.

Everything runs in your browser using its built-in image tools. Your photo is not uploaded, not stored and not put in the page link; only the settings are.

Three ways to fit a different shape

  • Crop to fillPhotos200 × 230Keeps the middle 2,609 × 3,000 pixels; the sides are trimmed.
  • Fit with white barsSignatures200 × 230Whole picture kept; 40 px white bars above and below.
  • Keep proportions200 × 150Nothing trimmed or added; the output is smaller on one side.

Worked example: an IBPS photograph

The IBPS PO/MT-XVI photograph preset asks for 200 × 230 pixels and 20–50 KB.

4,000 × 3,000 phone photo, crop to fill
Scale
s = max(target width ÷ width, target height ÷ height)
Bytes allowed
min KB × 1,024 to max KB × 1,000
  1. Scalemax(200 ÷ 4,000, 230 ÷ 3,000)7.7%
  2. Area kept200 ÷ s × 230 ÷ s2,608.7 × 3,000 px
  3. Trimmed from each side(4,000 − 2,608.7) ÷ 2695.7 px
  4. Smallest file allowed20 × 1,02420,480 bytes
  5. Largest file allowed50 × 1,00050,000 bytes

The tool then tries JPEG quality 95%. If that file is too big it tries 5%, then halves the gap 8 times, narrowing the range to about 0.4 percentage points. It keeps the highest quality it measured under the maximum.

The exact file size depends on your photo, so it is shown after processing, along with the quality used.

What “KB” means here

  • Minimum: 10 × 1,00010,000 bytes
  • Minimum: 10 × 1,024 (used)10,240 bytes
  • Maximum: 20 × 1,000 (used)20,000 bytes
  • Maximum: 20 × 1,02420,480 bytes
The 10–20 KB signature window read both ways. The tool aims inside the narrower one.

Notices write “KB” without saying whether that is 1,000 or 1,024 bytes, and portals differ. Holding the file between the higher minimum and the lower maximum passes either way.

When a small signature comes out under the minimum, the tool adds blank comment data inside the JPEG. JPEG decoders skip comment data, so the picture is unchanged.

The presets and their notices

  • IBPS PO/MT-XVIPhoto, signature, thumb and declaration, from the notification dated 1 Jul 2026.
  • UPSC ESE 2027Photo and signature: .jpg, 20–300 KB, no pixel size (notice dated 16 Sep 2026).
  • SSC CHSL 2026Signature only: JPEG, 10–20 KB. The photo is taken live in the form.
  • Yours to editChange any value to match the notice for your exam.

Each preset links to its notice and shows the date it was checked. Rules change between exams and years, so read the notice for the exam you are applying to before you upload.

Forms ask for exact pixels and file size. Other image jobs have their own tools.

To shrink any image to a target size, use the image compressor. The image resizer changes dimensions, and image to PDF combines scans into one file.

Common mistakes

  • Mistake: Stretching a photo to the target size.

    Instead: Crop to fill, or crop it yourself first so the face is centred.

  • Mistake: Cropping a signature so letters are cut off.

    Instead: Use “Fit with white bars” for signatures.

  • Mistake: Trusting a preset for a different exam or year.

    Instead: Open the notice for your exam and compare the numbers.

  • Mistake: Uploading a photo to an unknown website to resize it.

    Instead: Use a tool that works in your browser, like this one.

Read how we test our calculators, or browse more everyday tools.

Frequently asked questions

Is my photo uploaded?

No. Your browser resizes and compresses it on your device. The photo is not sent anywhere and is not saved in the page link.

How does it reach the KB limit?

It tries JPEG quality 95%, then 5%, then halves the gap up to 8 times, keeping the highest quality whose file is under the maximum. If the file is under the minimum, blank comment data is added without changing the picture.

Is 1 KB 1,000 or 1,024 bytes?

Notices do not say. The tool keeps the file at or above minimum × 1,024 bytes and at or below maximum × 1,000 bytes, so it passes either way.

Are the presets official?

Each preset copies the figures from one official notice, which is linked and dated. Rules differ between exams and years, so check the notice for your exam.

Should I crop or add white bars?

Crop to fill suits face photos, as long as the face is centred. White bars suit signatures, so no letters are cut off.

Why is there no SSC photo preset?

The SSC CHSL 2026 notice says the photograph is captured live in the application form, so no photo is uploaded. Its signature rule is included.

Sources and methodology

The formulas are standard time-value-of-money results. We check every figure against golden values worked out independently, by closed form and by month-by-month simulation; see the methodology.

Written and maintained by Nitin Raturi, a software engineer (about the author). Last reviewed 3 Nov 2026; next review due by . Found an error? Tell us.

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