How do I keep a transparent TIFF background in PNG?

Choose PNG and Keep under Transparency before converting. A supported TIFF alpha channel stays transparent; Flatten paints it onto the selected background. Keep does not erase white pixels from an opaque image. Remembered transparency settings can still apply on this page, so check the control before exporting.

Is TIFF to PNG conversion completely lossless?

PNG losslessly stores the decoded 8-bit RGB canvas pixels. It does not preserve every TIFF feature: 16-bit samples become 8-bit, CMYK becomes RGB, and layers, original compression and metadata are not retained as a TIFF file. Keep the source for archival or color-critical work.

Can a multipage TIFF produce several PNG files?

Yes. Every readable page starts selected; switch off pages you do not need and press Convert. Download each PNG or the ZIP of multiple outputs. Filenames keep source page numbers. This is one multipage TIFF at a time, not a folder or multi-file batch converter.

What input limits and compression types apply?

One baseline TIFF up to 50 MiB, 50 image pages and 30 million pixels per page. The decoder accepts uncompressed, LZW, Deflate, PackBits, CCITT Group 3/4 and supported JPEG layouts. BigTIFF, unsupported compression and unreadable pixel layouts are refused with a reason; see the parent page for details.

Can I make a PNG into a 300 DPI TIFF here?

No. This is TIFF input to PNG output. There is no TIFF encoder or resolution-tag control. It also does not resize pixels; use Image Resizer after exporting when you need a different width or height.

TIFF to PNG

Open a TIFF with PNG already selected. Choose the readable pages, check Keep under Transparency, and press Convert. Each selected page becomes its own PNG at the decoded pixel dimensions. For an opaque result, choose Flatten and a background color. Files stay in your browser.

No file yetTIFF

Open a TIFF here

or drop one on this stage

Never uploadedNo account50 pages at onceEvery page its own file

decoded in this tab

exportPNG, transparency kept

no page open

The pages this tool writes appear here, one file per page.

Pages

none open

Size

no page open

Format

Background

transparency kept

No file open yet. Choose a TIFF, or drop one on the stage, and it is decoded here in this tab: up to 50 MB, 50 pages and 30 megapixels a page.

PNG keeps every pixel the decoder produced and keeps transparency, and it is normally larger than the JPEG of the same page. Nothing leaves this tab: the decoder, the canvas and the zip all run here. The tool remembers four settings between visits, the format, the JPEG quality, the background colour and the transparency choice, and never a file.

Multi-page TIFFa scanned document
one file per page, numbered
Transparent pageto PNG
transparency kept
Unsupported compressionJPEG 2000, LZMA, WebP
named and refused, not half decoded

Accuracy. Decoded in your browser, so nothing is uploaded. It reads baseline TIFF up to 50 MB, 50 pages and 30 megapixels a page; a compression it cannot read is named and refused rather than half decoded, and JPEG has no transparency so it is flattened on the background you pick.

Common questions

How do I keep a transparent TIFF background in PNG?: Choose PNG and Keep under Transparency before converting. A supported TIFF alpha channel stays transparent; Flatten paints it onto the selected background. Keep does not erase white pixels from an opaque image. Remembered transparency settings can still apply on this page, so check the control before exporting.
Is TIFF to PNG conversion completely lossless?: PNG losslessly stores the decoded 8-bit RGB canvas pixels. It does not preserve every TIFF feature: 16-bit samples become 8-bit, CMYK becomes RGB, and layers, original compression and metadata are not retained as a TIFF file. Keep the source for archival or color-critical work.
Can a multipage TIFF produce several PNG files?: Yes. Every readable page starts selected; switch off pages you do not need and press Convert. Download each PNG or the ZIP of multiple outputs. Filenames keep source page numbers. This is one multipage TIFF at a time, not a folder or multi-file batch converter.
What input limits and compression types apply?: One baseline TIFF up to 50 MiB, 50 image pages and 30 million pixels per page. The decoder accepts uncompressed, LZW, Deflate, PackBits, CCITT Group 3/4 and supported JPEG layouts. BigTIFF, unsupported compression and unreadable pixel layouts are refused with a reason; see the parent page for details.
Can I make a PNG into a 300 DPI TIFF here?: No. This is TIFF input to PNG output. There is no TIFF encoder or resolution-tag control. It also does not resize pixels; use Image Resizer after exporting when you need a different width or height.

Decoded in your browser, so nothing is uploaded. It reads baseline TIFF up to 50 MB, 50 pages and 30 megapixels a page; a compression it cannot read is named and refused rather than half decoded, and JPEG has no transparency so it is flattened on the background you pick.