BMP to TIFF Converter

Convert BMP to TIFF: What This Tutorial Covers

This walk-through is for anyone moving a Windows Bitmap (.bmp) into a TIFF for printing, scanning, or long-term archival — and it focuses on the one setting that decides whether your conversion stays lossless. BMP and TIFF can both hold every pixel intact, so a BMP-to-TIFF conversion does not have to lose any quality; the catch is that this tool's Compression Type defaults to JPEG, which is lossy, so getting a truly lossless TIFF means switching that one dropdown.

How to Convert BMP to TIFF

1. Upload Your BMP File: Drag and drop your .bmp onto the page or click "+ Add Files" to add one or many bitmaps at once; each one becomes its own TIFF.
2. Set Compression Type to LZW: Open Advanced Options and change Compression Type from the default JPEG to LZW — this keeps the conversion lossless while still shrinking the file. Deflate, PackBits, and None are the other lossless choices.
3. Pick the TIFF or TIF Extension (Optional): Use the extension toggle to output .tiff or .tif; the bytes are identical, so match whatever your other software expects. Leave Image Resolution on "Keep original" unless you need to rescale.
4. Convert and Download: Click "Convert" and download your TIFF. No sign-up, no watermark.

Walk-through: Choosing a Compression Type Without Losing Quality

A BMP stores raw, uncompressed pixels, so it is already a perfect copy of the image. The reason to put those pixels into a TIFF is rarely "better quality" — it is a smaller file, richer metadata, and a container that print shops and archives actually accept. TIFF gets you there because it supports several compression schemes, and the lossless ones rewrite the same pixels in less space without changing a single value.

The trap is the default. On this converter the Compression Type dropdown starts on JPEG, and JPEG-in-TIFF is lossy — pointing a lossless BMP at it would discard detail you currently have, for no good reason on an archival or print file. Match the setting to your goal:

• Want a lossless archive or print master: choose LZW. It is the long-standing TIFF default across professional software, every TIFF reader supports it, and on typical screenshots and graphics it shrinks the file noticeably versus an uncompressed BMP.
• Want it as small as possible, still lossless: choose Deflate (ZIP), which often packs a little tighter than LZW.
• Want maximum compatibility with very old or embedded TIFF readers: choose PackBits or None (uncompressed) — larger files, but the simplest to decode.
• Genuinely need a small lossy file and accept the quality hit: only then leave it on JPEG (or pick WebP / JP2K). For a photo headed to the web, converting to JPG directly is the cleaner route.

One honesty note: BMP pixel data is typically 8 bits per channel, and TIFF can carry up to 16 bits per channel — but converting an 8-bit BMP does not invent extra bit depth. You get a faithful copy in a more capable container, not a higher-fidelity image than you started with.

Common Errors and How to Fix Them

• "My TIFF looks slightly soft or blocky compared to the BMP" — the Compression Type was left on JPEG. Re-convert with LZW (or Deflate / None) selected; those keep every pixel.
• "The TIFF is barely smaller than the BMP" — you likely used None (uncompressed). Switch to LZW or Deflate to get lossless size savings.
• "My image viewer won't open the TIFF" — most browsers and lightweight viewers do not render TIFF; only Safari displays it natively, per MDN. Open it in an editor or print/scan tool, or convert to PNG for on-screen use.
• "The transparent background turned solid" — classic BMP has no reliable alpha channel, so there was likely nothing transparent to carry over. If you need transparency, work from a PNG source instead.
• "A printer or DTP app rejected the file" — it may not read JPEG-compressed or ZSTD/JP2K TIFFs. Re-export with LZW, the most widely accepted TIFF compression.

When This Doesn't Work

This converter renders the visible bitmap into a TIFF, so it covers the common cases well — but it cannot recover detail a BMP never had, and it will not turn an 8-bit source into a true high-bit-depth master. If you are converting many other formats into TIFF, not just BMP, use the broader Image to TIF tool. For the three-letter .tif spelling specifically, the BMP to TIF page produces the identical file under the DOS-era 8.3 name. And if your real goal is a smaller image rather than an archival container, the Image Compressor is the better fit.

Frequently Asked Questions

Does converting BMP to TIFF lose any quality?

It does not have to. Both BMP and TIFF can store every pixel exactly, so a lossless conversion preserves the image bit-for-bit. The only way to lose quality is to leave the Compression Type on its JPEG default, because JPEG-in-TIFF is lossy. Choose LZW, Deflate, PackBits, or None and the TIFF is a perfect copy of the BMP.

Why is the default Compression Type JPEG instead of LZW?

JPEG produces the smallest TIFF, so it is offered as the size-first default — but it is lossy, which is the wrong choice for a lossless BMP destined for print or archival. The in-app note flags this: LZW is the standard for TIFF and offers the best compatibility, while JPEG and WebP compression are often unsupported by professional printing software and standard viewers. For anything you want to keep, switch to LZW.

Will a TIFF be smaller than my BMP file?

Usually, yes — if you compress it. A BMP stores raw pixels, so a 1920×1080 24-bit image lands around 6 MB. The same image as an LZW or Deflate TIFF is smaller while staying lossless, because those schemes pack the identical pixels more efficiently. If you pick None (uncompressed) the TIFF will be roughly the same size as the BMP.

Is a .tif file different from a .tiff file?

No. .tif and .tiff are two spellings of the same Tagged Image File Format, and the bytes inside are identical. The three-letter .tif survives from MS-DOS and early Windows, which limited extensions to three characters under the 8.3 filename rule. This tool exposes a TIFF / TIF toggle so you can match whatever your other software expects; the BMP to TIF page is the same conversion under that name.

Does TIFF preserve more detail than the original BMP?

No — it preserves exactly what the BMP holds, no more. A typical BMP is 8 bits per channel; TIFF can carry up to 16 bits per channel, but converting an 8-bit BMP does not create bit depth that was never captured. You get a faithful, re-editable copy in a format built for print and archival, not a sharper or deeper image. In our testing, an LZW TIFF made from a 1920×1080 24-bit BMP matched the source pixel-for-pixel while taking up less disk space than the uncompressed bitmap.

How are my files handled, and how long are they kept?

Your file is uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public.