What is PNG and why convert TIFF to PNG?

PNG (Portable Network Graphics) is a lossless image format with full transparency support, universally compatible with every browser, operating system, and image editor. TIFF files are large and not directly displayable in web browsers. Converting a TIFF to PNG produces a lossless, web-ready file that opens everywhere — without the large file size of an uncompressed TIFF.

Can I crop the TIFF image before converting to PNG?

Yes — the tool provides an interactive crop overlay on the source image. Drag the corner and edge handles to define exactly which portion of the TIFF you want in the output PNG. Click Preview Crop to see the result before downloading.

Does my image get uploaded to a server?

No. All processing — loading, cropping, and PNG encoding — happens entirely in your browser using JavaScript and the HTML5 Canvas API. Your image never leaves your device.

Does the output PNG preserve transparency?

Yes. PNG supports a full alpha channel. If your TIFF source contains transparent or semi-transparent pixels, those are preserved exactly in the output PNG. The canvas reads the full RGBA pixel data and passes it directly to the PNG encoder.

What is the maximum image size supported?

The tool is limited by your browser's available memory. TIFF files can be very large due to their uncompressed nature. In practice, TIFF files up to 30–50 MP convert reliably on modern desktop browsers. Very large images on mobile devices may be slower.

How do I reset and convert a different image?

Click the Start Over button that appears after loading an image. This clears the current file and resets the crop area so you can load a new TIFF.

TIFF to PNG Crop Converter

Load a TIFF, drag the crop handles to define exactly the area you need, preview the result, then download a lossless PNG. Everything runs in your browser — your image never leaves your device.

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Drop a TIFF here

or Browse Files · TIFF / TIF supported

What This Tool Does

This tool loads a TIFF image directly in your browser, presents an interactive crop overlay with draggable handles, and converts the selected area to a lossless PNG file. No server upload is required. The full workflow — loading, cropping, and PNG encoding — runs entirely in client-side JavaScript using the HTML5 Canvas API. TIFF files are decoded using URL.createObjectURL combined with img.decode(), which resolves only after the image is fully decoded and ready to paint, ensuring the canvas always receives complete pixel data before the crop overlay is drawn. The output is a lossless PNG — the most versatile and widely supported lossless web image format — with full preservation of any alpha channel transparency present in the source.

Who This Is For

Web developers who need a web-ready PNG from a high-resolution TIFF source without a full design tool
Photographers extracting a specific region of a TIFF scan and saving it as a portable lossless PNG
Designers preparing cropped TIFF assets for use in digital documents, presentations, or websites
Anyone who needs to trim and convert a TIFF to PNG without installing Photoshop or GIMP

TIFF vs PNG: Format Comparison

Property	TIFF	PNG
Compression	Lossless (or uncompressed)	Lossless (DEFLATE)
File size	Very large — often uncompressed	Smaller — DEFLATE compression applied
Browser support	Not natively displayed in browsers	Universal — every browser since the 1990s
Transparency	Full alpha channel	Full alpha channel (RGBA)
Color depth	8, 16, or 32-bit per channel	Up to 16-bit per channel
Metadata support	Extensive — ICC, EXIF, XMP	Basic — tEXt chunks, sRGB, ICC
Best for	Print, archiving, professional editing	Web, UI, icons, screenshots, transparent images

Frequently Asked Questions

Is the output PNG truly lossless?▼

Yes. PNG uses DEFLATE lossless compression — every pixel in the output is identical to the corresponding pixel in your cropped TIFF region. No quality is lost during conversion, making PNG the ideal format when you need a web-compatible image that is pixel-perfect with the source.

Does transparency carry through from TIFF to PNG?▼

Yes. PNG supports a full 8-bit alpha channel. If your TIFF contains transparent or semi-transparent pixels, those alpha values are carried through the canvas pixel data and preserved in the PNG output. The result is a fully transparent-capable PNG file.

How precise is the crop tool?▼

The crop operates at native pixel accuracy on the original TIFF dimensions. The canvas is scaled to fit your screen for display, but the actual crop coordinates are mapped back to the full-resolution image before the PNG is generated.

Can I move the crop selection after setting it?▼

Yes — click and drag inside the crop rectangle (away from the handles) to reposition it anywhere within the image. Handles resize; the interior pans.

What browsers are supported?▼

All modern browsers — Chrome, Firefox, Edge, Safari (desktop and mobile). The tool uses standard HTML5 Canvas and Blob APIs that have been universally supported since 2015.

Is there a file size limit?▼

There is no server-imposed limit because no upload occurs. The practical limit is your browser's available RAM. TIFF files can be very large. Most modern desktops handle TIFFs up to 50 MP comfortably. Very large files on memory-constrained mobile devices may be slower to process.

TIFF to PNG Crop Converter

What This Tool Does

Who This Is For

TIFF vs PNG: Format Comparison

Frequently Asked Questions

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