AI Image Resizer Online Free

Need a photo resized to an exact pixel size for a passport application, a PAN card form, or an Instagram post — without installing anything or handing your photo over to a random website? This free online image tool does it all in your browser: nothing you upload ever leaves your device.

Try the tool below

Utility · Runs in your browser

Image Tool

Resize to exact passport/PAN/ID or social-media dimensions, rotate & flip, adjust tone or apply a look, convert formats, or compress down to an exact KB size. Nothing leaves your device.

Drag an image here, or browse files

Before
Your original image will appear here
After
Edits will preview here
Dimensions: Estimated size:

ID & Document Photos

Social Media

Presets crop-to-fit (center crop) so the exact pixel size is hit without stretching your photo.

Resized to

This scales the whole image to the new size (no cropping).

Tone

Preset Looks

Tone sliders preview live in the "After" box — click Apply to bake them in. Preset looks apply immediately and stack on top of your current edits.

PNG is lossless and ignores quality/target size — switch to JPEG or WEBP to hit a specific KB size.

How to use the image resizer

1. Resize to an exact size (passport, PAN card, Instagram, YouTube, etc.)

  1. Drag your photo into the box at the top, or tap browse files to select one.
  2. Open the Preset Sizes tab. You'll see two groups: ID & Document Photos and Social Media.
  3. Tap the size you need — for example PAN Card Photo or Instagram Post (Square). The tool automatically crops and resizes your photo to the exact pixel dimensions required, centering the crop so nothing important gets cut off.
  4. A green Download this image button appears immediately — tap it and the resized photo saves straight to your device.

2. Resize to a custom size

  1. Open the Resize tab.
  2. Type in the exact width and height you need in pixels.
  3. Leave Lock aspect ratio checked if you want the proportions to stay the same as you type — untick it if you need a specific width and height regardless of stretching.
  4. Tap Apply resize.

3. Rotate or flip a photo

Open the Rotate/Flip tab and tap Rotate Left, Rotate Right, Flip Horizontal, or Flip Vertical. Each tap applies instantly — check the "After" preview to confirm before downloading.

4. Adjust brightness, contrast, and color, or apply a look

  1. Open the Adjust & Looks tab.
  2. Drag the Brightness, Contrast, or Saturation sliders — you'll see the change live in the "After" box.
  3. Tap Apply tone changes to lock them in, or Reset sliders to undo.
  4. Prefer a one-tap style? Use the preset looks — Vivid, B&W, Warm, Cool, Vintage, Fade, or Cinematic.

5. Convert file format or compress to an exact KB size

  1. Open the Convert & Compress tab.
  2. Choose your output format: JPEG, PNG, or WEBP.
  3. For a specific file size — many government and job portals cap uploads at 20KB, 50KB, or 100KB — type the number into Target size (KB) and tap Compress to target. The tool automatically finds the highest quality that still fits under your limit.
  4. Tap Download image when you're happy with the result.

Made a mistake along the way? Tap ↺ Reset to original at any time to start over from your original upload.

Exact photo size requirements (pixels)

These are the dimensions used by the presets in this tool, handy to bookmark for reference:

Use caseSize (pixels)
Passport photo600 × 600
PAN card photo295 × 413
Aadhaar card photo413 × 413
Voter ID photo295 × 413
Job application / resume photo413 × 531
Stamp size photo236 × 295
US visa photo600 × 600
Instagram post (square)1080 × 1080
Instagram portrait post1080 × 1350
Instagram story / reel1080 × 1920
WhatsApp DP500 × 500
Facebook profile photo720 × 720
Facebook cover photo820 × 312
YouTube thumbnail1280 × 720
YouTube channel banner2560 × 1440
YouTube profile picture800 × 800
LinkedIn profile photo400 × 400
LinkedIn cover photo1584 × 396
X (Twitter) profile photo400 × 400
X (Twitter) header1500 × 500

Why use a browser-based image tool?

  • Privacy first — your photo is processed entirely on your own device. It's never uploaded to a server, which matters for ID documents like PAN cards, Aadhaar, and passport photos.
  • No sign-up, no watermark — free to use as many times as you like.
  • Works on mobile — resize a photo for a form directly from your phone's browser, no app install needed.
  • Exact file size control — most portals reject files over a certain KB limit; the compress-to-target feature handles that automatically instead of you guessing quality percentages.

Frequently asked questions

What is the correct passport photo size in pixels?

Passport photos are commonly required at 2×2 inches, which is 600×600 pixels at 300 DPI. This tool's Passport Photo preset crops and resizes to exactly that.

What size photo does a PAN card application need?

PAN card photos are typically 25mm × 35mm, which works out to roughly 295×413 pixels at 300 DPI — available as a one-tap preset in this tool.

How do I compress an image to under 20KB or 50KB?

Open the Convert & Compress tab, enter your KB limit under Target size, and tap Compress to target. The tool tests different quality levels automatically and picks the highest quality that still fits your limit.

What is the current Instagram image size for posts and stories?

Square posts are 1080×1080, portrait posts are 1080×1350, and Stories/Reels are 1080×1920. All three are available as presets.

Can I convert a PNG to JPG (or to WEBP) online for free?

Yes — open the Convert & Compress tab, choose your target format from the dropdown, and download. PNG is lossless so it won't shrink as much as JPEG or WEBP for photos.

Is my photo uploaded anywhere when I use this tool?

No. All resizing, cropping, compressing, and format conversion happens locally in your browser using JavaScript's Canvas API. Nothing is sent to a server.

What is the ideal YouTube thumbnail size?

1280×720 pixels (16:9 ratio) is YouTube's recommended thumbnail size, and it's available as a preset here.

How can I resize an image without losing quality?

Resizing down (making an image smaller) rarely causes visible quality loss. If you need to keep maximum quality, choose PNG as your output format, since it's lossless — though the file size will be larger than JPEG or WEBP.

What's the difference between the Resize tab and the Preset Sizes tab?

Preset Sizes crops your photo to exactly fit a standard dimension (like a passport or Instagram size) without stretching it. The Resize tab instead scales your entire image to whatever custom width and height you type in, which can stretch the image if the aspect ratio doesn't match.

Can I use this tool on my phone?

Yes, it works in any modern mobile browser — no app download required.

Related tools

Looking for something else? This site also has free browser-based tools for:

  • Merging multiple PDFs into one
  • Splitting a PDF into individual pages or custom ranges
  • Adding or removing a PDF password
  • Adding text to an existing PDF
  • Compressing images and converting them into a single PDF

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