Convert PDF to BMP online for free. Use this page when you need document pages exported as images for previews, visual sharing, slide decks, screenshots, or website use.
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Checking files and selected output formats.
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BMP is Microsoft's legacy uncompressed bitmap format. Almost no modern software output-defaults to BMP. Real reasons to convert: legacy Windows-based industrial or scientific software that can't open PNG, embedded systems reading raw pixel arrays, or specific print-shop equipment that only accepts BMP. Everyone else should pick PNG (lossless, transparent, smaller) instead.
Every page becomes its own image file at whatever DPI you choose — good for web previews, presentations, and inserts into other documents.
The tool accepts single-page and multi-page PDFs. Every page in the source becomes a separate BMP image, delivered together as a ZIP. Files up to 10 MB on the free plan, up to 1 GB on Pro — enough for reports, scanned books, and long slide decks.
72 DPI produces web-sized previews. 150 DPI is the standard for on-screen reading. 300 DPI matches print quality. Higher means larger files with sharper output; lower means smaller files that still look clean at normal viewing distances. Pick based on where the images are going next.
The conversion produces one BMP file per PDF page, delivered as a ZIP with numbered filenames (page-001, page-002, and so on). Both the PDF you uploaded and the extracted images are permanently deleted from our servers within 30 minutes.
Each PDF page is rendered as a raster image at the resolution you picked — text, vector graphics, and embedded images are all flattened into a single bitmap. That's usually what you want (a page snapshot), but it also means text on the resulting BMP is no longer selectable or searchable. If you need the text out, use the OCR tool or convert to Word first.
Six concrete scenarios — not "so you can use it on the web."
Browsers don't render inline PDF thumbnails reliably. Turning each page into a BMP lets you embed them directly as <img> tags — no plugin, no iframe, no Google Docs viewer workaround.
Reusing content from a PDF presentation in a new deck, blog post, or social share means extracting the slides you want as images. Converting the whole PDF to BMP gives you every slide separately — pick the ones you want and drop them into the new document.
Sending a colleague page 7 of a 40-page report as a JPG is dramatically simpler than sending the whole PDF and telling them where to look. One image, one message, no scrolling — done.
Any workflow that displays a preview of a document (a document management system, an internal wiki, an inventory tool) needs image versions of the source PDFs. Batch-converting your PDFs to BMP once is easier than generating previews on demand at runtime.
Some devices (older e-readers, unusual OSes, air-gapped machines) don't have a proper PDF viewer but do handle BMP images fine. Converting each page turns the PDF into something the target device can definitely display.
Figma, Canva, and most design apps import images cleanly but treat PDFs as opaque objects (or don't accept them at all). Converting the PDF page to a BMP first means the design tool can slice, mask, and layer it like any other asset.
Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.
| Property | BMP | |
|---|---|---|
| Full name | Portable Document Format | Bitmap |
| Year introduced | 1993 | 1990 |
| Developer / standard body | Adobe | Microsoft |
| MIME type | application/pdf | image/bmp |
| File extension | .bmp | |
| Compression | Built-in (FlateDecode, DCTDecode) | Uncompressed (typically) |
| Color / data depth | Vector + raster | 1 to 32-bit |
| Max dimensions / size | 381 km × 381 km (15,000 × 15,000 inches) | 32,767 × 32,767 px |
| Transparency | Yes | Yes |
| Animation | No | No |
| Standard / specification | ISO 32000 | Microsoft Windows |
| Best for | Final-form documents, contracts, archives — looks identical everywhere | Legacy Windows applications, raw pixel data |
PDF (Portable Document Format) was created by Adobe in 1993 and has since become an ISO standard (ISO 32000). It preserves the exact layout, fonts, images, and formatting of a document regardless of which device, operating system, or software is used to open it. PDF is the universal standard for sharing documents that must look the same everywhere, from legal contracts to academic papers.
Beyond simple document viewing, PDF supports interactive forms, digital signatures, AES-256 encryption, accessibility features, and embedded multimedia. The PDF/A variant is specifically designed for long-term archival of electronic documents. While PDFs are primarily view-only by default, they can be made editable with the right tools. PDF remains the go-to format for official documents, printable materials, and any content that requires consistent presentation across platforms.
Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert PDF files to BMP.
Read guides about exporting document pages as images for previews, screenshots, presentations, and web use.
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