# BMP & TIFF Converter - Free Online Convert BMP or TIFF images to JPG, PNG, or WebP in your browser on ToolComb. ### Input image Choose or drop an image Output format Quality: 85% Convert Clear ### Preview & result Converted preview appears here after you choose a file ## A converter for BMP and TIFF files BMP, short for bitmap, is one of the oldest raster formats on Windows. It grew out of Windows 3.0 in 1990 and stores pixels in a straightforward, mostly uncompressed layout, which made it trivial for early software to read and write. That simplicity is also its drawback: a photograph that takes 400 KB as a JPEG occupies tens of megabytes as a BMP, and modern web pages, email systems, and apps rarely accept it. TIFF, the Tagged Image File Format, was created in the mid-1980s by Aldus and is now maintained by Adobe. It is built around tags that describe image data, which lets it hold different colour modes, bit depths, compression schemes, multiple pages, and metadata. That flexibility made it the standard for scanners, fax systems, desktop publishing, GIS, and medical and scientific imaging, but most browsers cannot display it, and messaging apps often reject it. This page accepts BMP and TIFF among other image types and offers JPEG, PNG, WebP, BMP and TIFF outputs. File and browser support vary; inspect the downloaded result, especially when working with scans or unusual TIFF files. The combination makes it useful for the unglamorous problems that come with legacy files: a stack of scans that must be emailed, a lab image that has to go into a slide deck, a Paint drawing from 1998 that needs to appear on a website. It deals with the pixels and leaves out features such as multi-page support and colour management, which are listed explicitly in the limits section so you know when a specialist tool is required. ## How to convert BMP and TIFF images Five steps from a bulky legacy file to something you can email or publish, with a note on which output suits which kind of image. 1. **Choose an image** Select or drop a BMP or TIFF file that your browser and this tool can open. 2. **Choose output format** Select JPEG, PNG, WebP, BMP or TIFF according to the destination's requirements. 3. **Set quality** For formats with a quality control, adjust it for the intended output. 4. **Convert and review** Select Convert, then check the downloaded image's format, appearance, dimensions and file size. ## Worked example: emailing a scanned family photo ### Before A user scans a 6 by 4 inch print at 600 DPI with her flatbed scanner and gets a 3600 by 2400 pixel TIFF of 26 MB. The email provider's attachment limit is 20 MB, and her relatives' phones cannot open TIFF files. ### After She selects JPEG and a quality level, then compares the downloaded file with the source. File size, visual detail and dimensions should be checked rather than assumed. Because only the JPG was shared, the family gets a quick, light file, while the lossless PNG stays on her computer. If she later needs a poster print, she returns to the original TIFF rather than enlarging the JPG, which keeps the best possible quality for the job. ## When BMP and TIFF conversion comes up ### 1. Emailing and messaging scanned documents Scanner utilities default to TIFF or BMP, which are too big for many mail servers. A JPG or PNG copy passes size limits and displays inline in webmail. ### 2. Uploading to online portals Admissions, insurance claims, and visa forms usually accept JPG or PNG only. Converting a TIFF scan of a certificate satisfies the file-type check. ### 3. Publishing scientific and lab images Microscopes, gel imagers, and cameras export TIFF. Converting to PNG keeps the data lossless for figures while remaining usable in word processors and web pages. ### 4. Rescuing old Windows artwork Drawings from Paint, early clip-art collections, and 1990s game assets often sit as BMP. PNG or WebP versions are far smaller and ready for modern sites. ### 5. Preparing images for presentations PowerPoint and Google Slides handle TIFF inconsistently. A JPG or PNG avoids blank placeholders and shrinks the final deck considerably. ### 6. Normalising files for content systems CMS platforms, e-commerce backends, and digital asset tools frequently reject BMP and TIFF. Batch preparation of a few files here avoids support tickets. ### 7. Feeding legacy equipment Label printers, embroidery software, and industrial controllers sometimes want a plain BMP. Re-encoding a PNG logo as BMP gives them a format they understand. ### 8. Reducing archive storage Converting uncompressed scans to lossless PNG roughly halves their size without discarding any pixels, a safe choice when you want to save space but keep quality. ### 9. Quick inspection of unknown files When a colleague sends a .tif you cannot open, converting it shows the preview immediately, without installing a viewer. ## BMP and TIFF compared with the formats you will likely want Use this table to decide where each file should end up. Sizes are rough figures for a 3000 by 2000 pixel photograph. | Format | Compression | Approx. size | Notes | | --- | --- | --- | --- | | BMP (input or output) | None in this tool, 24-bit | About 18 MB | Widely readable on Windows, no alpha, huge files | | TIFF (input or output) | Often none, LZW, or PackBits on input; none on output | 6 to 24 MB | Flexible container, rarely displayed in browsers | | JPG | Lossy | 0.5 to 1.5 MB | Best for photographs and email | | PNG | Lossless | 5 to 9 MB for photos, less for graphics | Best for text, diagrams, and editing | | WebP | Lossy in this tool | 0.3 to 1 MB | Best for web delivery | Choose JPG or WebP when size matters and the picture is photographic, PNG when the content is sharp-edged, and BMP or TIFF only when another program demands them. ## What this converter cannot do - Only the first page or image of a multi-page TIFF is converted, so scanned document bundles need a dedicated splitter. - The TIFF decoder is lightweight. CMYK, 16-bit, floating-point, and some JPEG or fax-compressed TIFFs may show wrong colours or fail. - Output TIFF is a single, uncompressed 8-bit RGBA image with no ICC profile, DPI tags, or extra pages. - Output BMP is 24-bit and has no transparency. - DPI, physical size, EXIF, and colour profile information from the input are not copied to the result. - Files above 50 MB are rejected, and very large dimensions can exhaust memory on phones. - Converting a TIFF or BMP to JPG or WebP is lossy, so keep the original if the scan is irreplaceable. - Only one file can be converted at a time, with no batch or folder mode. ## Privacy for scanned documents Scans commonly contain signatures, ID numbers, and medical details. Here the file is decoded and re-encoded within your browser, with no server receiving a copy. The TIFF decoder is shipped with the page and loaded on demand, so the document itself never needs to leave your device to be understood. The converted file is written to your downloads folder only. Delete both the original and the converted file securely if the computer is shared. ## Frequently Asked Questions ### Why are BMP and TIFF files so large? BMP stores raw pixel values with no compression, so a 4000 by 3000 pixel 24-bit image takes about 36 MB regardless of what it shows. Scanner TIFFs are frequently uncompressed or lightly compressed and may hold 16 bits per channel, which doubles the weight. JPG, WebP, or PNG typically shrink them dramatically. ### Which output should I choose for scans? Use JPG at 85 to 90 for scanned photographs and WebP when the file goes on a website. Use PNG for scanned text, line drawings, maps, and screenshots, because JPEG compression leaves visible noise around sharp edges. Choose TIFF output only when downstream software specifically requires it. ### Can this tool read compressed and multi-page TIFFs? Support depends on the source file and browser. This tool is intended for a still image and does not provide multi-page selection; inspect the output or use a specialist editor for multi-page files. ### Does the BMP keep transparency? Transparency depends on the source and selected output format. JPEG does not support transparency; inspect PNG or WebP outputs before using them. ### What does a BMP written by this tool look like? It is a standard 24-bit Windows bitmap with a 54-byte header, rows padded to four-byte boundaries, and top-down row order. It opens in Paint, IrfanView, GIMP, and most Windows software. It is uncompressed, so the file is large, and any transparency is dropped. ### Is the TIFF written by this tool suitable for archives? It is a simple single-image, uncompressed 8-bit RGBA TIFF, which is readable by Photoshop, GIMP, Preview, and most viewers. It carries no ICC profile, resolution tags, or multiple pages, so it is not a preservation-grade archival master. Use it to hand pixels to software that insists on TIFF. ### Will resolution and DPI settings be kept? The output may not retain print metadata. Check the downloaded image's dimensions and use your destination's current print requirements rather than relying on the filename. ### Is my scan uploaded to a server? Image conversion runs in your browser. Downloaded copies remain on your device; handle sensitive images according to your own privacy requirements. ### My TIFF preview looks wrong or blank. What can I try? A blank or garbled preview usually indicates a compression or colour mode the lightweight decoder does not handle, such as CMYK, JPEG-in-TIFF variants, or 16-bit floating point. Open the file in Safari, which has native TIFF support, or re-save it from an image editor as a standard RGB TIFF with LZW or no compression. ### Can I convert dozens of scans at once? No. This page processes one file at a time, up to 50 MiB. For a folder of scans, a dedicated batch converter or your scanner software may be more convenient. ## Other helpful tools - [Image Converter](https://www.toolcomb.com/image-converter) - Pick from every supported output, including AVIF and ICO. - [Image Compressor](https://www.toolcomb.com/online-image-compressor) - Reduce file size further after converting. - [Resize Image](https://www.toolcomb.com/resize-image) - Scale down large scans before sharing. - [Convert to JPG](https://www.toolcomb.com/convert-to-jpg) - Dedicated converters for many formats into JPG. ## Related Tools Discover more free tools that might help with your next task. 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