About

This tool converts Portable Document Format (PDF) files into Portable Network Graphics (PNG) images entirely within your web browser. Unlike server-side solutions that require uploading sensitive documents, this engine processes data locally using the client's CPU.

The conversion process involves rasterization, where vector-based data (text, lines, curves) is mapped onto a pixel grid. This tool allows you to control the output quality by adjusting the scale factor, effectively changing the resolution (DPI). It handles multi-page documents by generating individual image files for each page, ensuring no loss of visual fidelity.

Formulas

The resolution of the output image is determined by the scalar relationship between the PDF point system and the target pixel grid. Standard PDF coordinates are defined in points (pt), where 1 pt ≈ 172 inch.

W_px = W_pt × S_factor

Where S_factor represents the scaling multiplier. To calculate the effective DPI:

DPI = 72 × S_factor

If S = 2.0, the output is 144 DPI. Higher values yield sharper text but larger file sizes.

Reference Data

Format	Dimensions (Inches)	72 DPI (Screen)	150 DPI (Draft)	300 DPI (Print)
A4	8.27 × 11.69	595 × 842 px	1240 × 1754 px	2480 × 3508 px
Letter	8.50 × 11.00	612 × 792 px	1275 × 1650 px	2550 × 3300 px
Legal	8.50 × 14.00	612 × 1008 px	1275 × 2100 px	2550 × 4200 px
A3	11.69 × 16.54	842 × 1191 px	1754 × 2480 px	3508 × 4960 px
Tabloid	11.00 × 17.00	792 × 1224 px	1650 × 2550 px	3300 × 5100 px

Frequently Asked Questions

No. The conversion happens entirely in your browser using JavaScript. Your files never leave your device, making this safe for sensitive documents.

The default scale might be too low. Increase the "Quality / Scale" slider to 2.0 or 3.0 to render at a higher resolution (High DPI). This increases processing time but results in sharper images.

Currently, this tool supports standard unencrypted PDFs. If a file is password-protected, you must remove the password using a PDF unlocker before converting.

Yes, but browser memory is limited. For PDFs with hundreds of pages, the tool processes them sequentially to prevent crashing, which may take a few minutes.