PDF to BMP Converter: Free, Private, No Upload

Convert PDF files to BMP in your browser. Lossless output, batch up to 20 files at once, no upload, no account, no watermark. Your files never leave your device.

PDF to BMP
Batch up to 20 files
No upload, no account
Metadata stripped

1Add up to 20 images
2Pick from 18 formats
3Download or copy the code

Processed on your device. Your images are never uploaded, and metadata is stripped. How we keep it private

How do I convert PDF to BMP for free?

Drop your PDF files into the tool above, choose BMP as output, and download the result. Everything runs in your browser, so nothing is uploaded and there is no limit or watermark. It works on Windows, Mac, Linux, ChromeOS, iOS and Android — anywhere you have a modern browser.

Price: Free, no credits and no daily cap
Account required: No
File uploaded to server: No, processed locally in your browser
Batch limit: Up to 20 files at once
Input format: PDF
Output format: BMP
Best for: BMP workflows, lossless quality, editing, printing
Works on: Chrome, Edge, Firefox, Safari, iOS and Android browsers
Privacy: No upload, no tracking, metadata stripped
Output quality: Lossless, exact pixels

How to convert PDF to BMP

1
Drop your PDF files
Drag up to 20 PDF files onto the page or click to choose them. Everything runs in your browser.
2
BMP is preselected
Output is already set to BMP. Adjust quality, resize or batch if you want.
3
Download
Save each BMP, or download all of them together as a ZIP.

PDF to BMP: what changes and when it makes sense

PDF is a Portable Document Format. It is best known for a fixed layout that prints and displays identically everywhere. The main drawbacks are not being an image format, so pages cannot be dropped into an img tag without rendering them first.

BMP is a Bitmap image format. It is best known for a simple structure that legacy programs and embedded systems can read without a decoder library. The main drawbacks are enormous files and no reliable transparency.

PDF vs BMP at a glance

Property	PDF	BMP
Type	Container format	Raster image
Compression	A container for text, vector shapes and images. Embedded photos are usually JPEG or lossless Flate	Usually uncompressed (run-length encoding exists but is rare)
Transparency	Pages render on an opaque background	None
Animation	No	No
Colour depth	Depends on the embedded images	1 to 32 bits per pixel
Support	Opens on every device, with a built-in viewer in all major browsers	Opens in browsers and most desktop software, but almost never used on the web
History	Developed by Adobe in 1993 as a way to share documents with fixed layout. Became an open ISO standard (ISO 32000) in 2008. PDF 2.0 (ISO 32000-2) was released in 2017. The most common document format for business globally.	Created by Microsoft for Windows 1.0 in 1985 as the native bitmap format for the Windows Graphics Device Interface. The "BM" signature has been unchanged since then. Still used in embedded systems and legacy Windows software.

What actually changes in this conversion

A PDF page is rendered to pixels when you convert it. Text and vector artwork become pixels at that resolution.
EXIF, GPS and camera data are stripped on every conversion. That is good for privacy, but you lose capture dates.

About PDF: history and technical details

Developed by Adobe in 1993 as a way to share documents with fixed layout. Became an open ISO standard (ISO 32000) in 2008. PDF 2.0 (ISO 32000-2) was released in 2017. The most common document format for business globally.

Technical: Object-based file structure with cross-reference tables. Supports text, vector graphics, images, fonts, forms, JavaScript and digital signatures. Pages are rendered to a fixed canvas. Can embed JPEG, PNG, JPEG 2000 and JBIG2 images.

Real-world size: A scanned A4 document at 300 DPI is 1-5 MB. The same pages as JPG are 200 KB to 1 MB each. A text PDF of 100 pages is 200-500 KB. A photo-heavy PDF can be 50-100 MB.

Popular tools: Adobe Acrobat, Preview (macOS), Foxit Reader, SumatraPDF, Chrome (built-in viewer), Ghostscript, qpdf.

Alternatives: Word document (editable), HTML (web-native), JPG/PNG (single page), ePub (eBooks).

About BMP: what you get

Created by Microsoft for Windows 1.0 in 1985 as the native bitmap format for the Windows Graphics Device Interface. The "BM" signature has been unchanged since then. Still used in embedded systems and legacy Windows software.

Technical: File header 14 bytes (signature, size, reserved, offset) followed by DIB header (40+ bytes). Supports 1, 4, 8, 16, 24, 32-bit pixels. Rows padded to 4-byte boundaries. Pixels can be stored bottom-up or top-down. Optional RLE4/RLE8 rarely used.

Real-world size: A 12-megapixel photo is 36 MB as 24-bit BMP. As JPG it is 2-4 MB (90% smaller). A 1920x1080 screen at 32-bit BMP is 8.3 MB; as PNG 200-600 KB.

Popular tools: Windows Paint, IrfanView, XnView, ImageMagick, GIMP, Adobe Photoshop, embedded dev tools.

Alternatives: PNG (lossless, 5-20x smaller), TGA (game pipelines), TIFF (professional print), JPG (lossy, much smaller).

Browser and software compatibility

PDF: Opens on every device, with a built-in viewer in all major browsers. BMP: Opens in browsers and most desktop software, but almost never used on the web.

BMP output opens in browsers and most desktop software, but very few web workflows expect it.

Why people move away from PDF

A PDF page cannot be used in an img tag, a slide or a social post, so you need an image.
Turning a page into PNG or JPG is the quickest way to share one page or reuse it in a design.
Some forms and CMS uploaders accept images but reject PDF.

Why people choose BMP

Some legacy Windows software, embedded displays and industrial tools only read BMP.
With no compression there is no decoding step and no compression artefacts.

Common mistakes with PDF

Assuming PDF text is searchable — scanned PDFs are images, need OCR
Not checking page orientation — sideways photos stay sideways
Embedding large images at full resolution — balloons file size

Best practices for keeping quality

Converting a PDF page produces pixels at a fixed resolution. Choose a size large enough for the final use, because text will not sharpen later.
Expect a very large file. Check the upload limit and free disk space before saving.
Flatten any transparency first. BMP does not reliably carry an alpha channel.
Resize before converting if the image will be shown small. A 4000 pixel photo displayed at 800 pixels wastes bytes in any format.
Check the result at 100 percent zoom, especially around text, edges and gradients, before you replace any originals.
Keep your original files. Conversions to a lossy format cannot be undone.
When you convert a set of images, use the same quality setting for the whole batch. The converter handles up to 20 files at once.

PDF to BMP questions

Quick answers about privacy, quality, supported formats, file limits and how BMP works.

Why convert PDF to BMP?

BMP is lossless. It keeps every pixel exactly. It is the safe choice when you plan to edit, print or need exact pixel data.

Will converting PDF to BMP lose quality?

No. BMP is lossless, so nothing is thrown away.

Does BMP keep transparency?

No. BMP does not support transparency. Transparent areas will be filled with white.

Are my files uploaded?

Never. Everything runs in your browser. Your files never leave your device. Open DevTools Network tab while processing — you will see no upload request.

Can I convert many files at once?

Yes, up to 20 files at once. Download them individually or all together as a ZIP.

Does the converter strip metadata?

Yes. Browsers do not pass EXIF data through a canvas, so GPS, camera model and dates are removed on every conversion. That is good for privacy.

Is it free?

Yes. No credits, no daily cap, no account, no watermark. The practical limit is your device memory.

Why is BMP so large?

Because it stores raw pixel data with little or no compression. A 12-MP photo as 24-bit BMP is 36 MB, compared to 2-4 MB as JPG. The tradeoff is speed (no decoding needed) and lossless quality.

Your files never leave your device

No upload, no account, no tracking. Everything happens in your browser using the Canvas API and WebAssembly. You can confirm this in your browser's DevTools Network tab while the tool runs — no request carries your file. See why ToolDeck is different.