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increasesize.in

How our tool works • यह टूल कैसे काम करता है

A completely transparent look at the binary-level algorithms we use to expand image and document weights without degrading visual fidelity. (यह कैसे आपकी फोटो की क्वालिटी बदले बिना उसका साइज बढ़ाता है।)

Transparent & Honest Engineering • स्पष्ट और ईमानदार तकनीक
This adds harmless extra data so the file reaches the size your form asks for. It does not make the picture sharper. (यह टूल फोटो में सेफ डेटा जोड़ता है जिससे उसका KB साइज बढ़ जाता है। यह फोटो को धुंधला नहीं करता।) If your form specifically mandates larger pixel dimensions, use our Dimension mode to adjust width and height.

What happens when you choose a file

When you drop or browse a photo from your gallery, the file is read into your browser's local memory using the HTML5 File and FileReader API.

Our code inspects the first several bytes (magic numbers) to detect the exact format: 0xFFD8 for JPEG, 0x89504E47 for PNG, RIFF...WEBP for WebP, and %PDF for PDF documents. It calculates the current byte weight and evaluates how many padding bytes are required to reach your target.

Padding, re-encoding and resizing in plain words

1. Safe Metadata Padding (Default Mode)

We insert valid, non-rendering comment blocks into the file headers (such as COM markers in JPEG or private paDd chunks in PNG). Decoders ignore these blocks, keeping every pixel, color value, and line contour 100% untouched.

2. Canvas Dimension Resizing

When you need larger pixel dimensions (e.g. 350x450 px), we draw the image onto an HTML5 Canvas using high-quality smoothing and export the new dimensions with optional padding.

Why nothing is uploaded (verify it yourself)

You do not have to take our word for it—you can verify our client-side guarantee yourself in under 30 seconds using standard browser tools:

  1. Press F12 (or right-click and choose Inspect) on your computer, and open the Network tab.
  2. Filter by Fetch/XHR.
  3. Drop an image into the tool and click “Increase File Size”.
  4. Notice that no network request leaves your browser. You can even disconnect your internet entirely and the tool will continue processing files instantly.

How we hit the exact size

In binary computing, 1 KB is defined as 1024 bytes. If your target is 50 KB, the target byte size is 51,200 bytes.

Our engine measures the initial byte length (for instance, 18,432 bytes) and calculates the exact shortfall (32,768 bytes). It constructs comment segments sized precisely to bridge this gap down to the single byte level.

Limits and supported formats

Supported File Formats

JPG/JPEG, PNG, WebP, and PDF documents. Maximum recommended input size is 25 MB for optimal mobile RAM safety.

Device Requirements

Works on all modern browsers (Chrome, Safari, Firefox, Edge, Samsung Internet) on Android, iOS, Windows, Mac, and Linux.

Launch the Tool