Is this TIFF to AVIF converter really free?

Yes. Up to 5 files at a time, no signup, no catch. The free tier adds a small watermark to image output — Pro ($9.99/mo or $49/yr) removes it, raises the file size limit to 500 MB, and unlocks unlimited batch conversion.

Are my files uploaded to a server?

No — and you can verify it yourself. Open DevTools → Network tab, then convert a file. You'll see zero upload requests. Everything runs right in your browser. We never see your files.

How long does conversion take?

Usually 1–3 seconds for a typical file. The very first conversion on a fresh page load may take 5–20 seconds while the converter engine loads — after that it's instant. Your CPU does all the work locally.

What is the file size limit?

Free: up to 10 MB per file, 5 files per batch. Pro: up to 500 MB per file, unlimited batch. If you're working with large videos or RAW photos, Pro is built for that.

Can I batch convert multiple TIFF files at once?

Yes — drop multiple files at once (or Ctrl/Cmd+click to select them) and they all convert in parallel. Free accounts handle up to 5 files per batch; Pro has no limit.

Will the image quality change after conversion?

It depends on the formats involved. Converting to a lossless format like PNG preserves every pixel exactly. Converting to a lossy format like JPEG or WebP applies compression — we default to 85% quality, which looks identical to the original for almost all images. You won't notice a difference unless you zoom in pixel-by-pixel.

Do you support batch image conversion?

Yes — drop multiple images at once and they all convert in parallel. Free accounts handle up to 5 at a time; Pro is unlimited. Download everything as a single ZIP when you're done.

Will detail be lost converting a high-res TIFF to AVIF?

At quality settings above 75, AVIF is visually lossless for most images. You'll get a dramatically smaller file with imperceptibly less detail, ideal for web display.

Can I batch-convert a folder of TIFF masters to AVIF?

Select multiple TIFFs at once in the file picker — each is converted and available for download. For very large batches, convert in groups.

How private is this converter?

Completely private — by design, not policy. There is no upload endpoint. Files are processed right inside your browser tab and disappear the moment you close it. We collect only anonymous page-view counts; your file content is never seen or stored.

TIFF to AVIF Converter — Free, Online, No Upload

How to convert TIFF to AVIF online

1
Drop your TIFF file
Drag and drop your Tagged Image File Format file onto the converter, or click to browse your files. You can select up to 5 at once. Nothing leaves your device — conversion happens right here in the browser.
2
Hit Convert — it happens locally
Click Convert and watch it go. There's no upload, no server queue, no waiting. The converter runs Tagged Image File Format → AV1 Image File Format entirely in your browser tab. Most files finish in 1–3 seconds.
3
Download your AVIF
Your AV1 Image File Format file is ready. Click Download, or grab a ZIP if you converted a batch. Close the tab and everything disappears — no copies kept anywhere.

TIFF vs AVIF: format overview

TIFF

Tagged Image File Format

Aldus Corporation · 1986

Compression: lossless
Color depth: 32-bit
Transparency: Yes

✓ Preserves maximum quality for archiving
✓ Supports multiple layers and pages
✗ Extremely large file sizes

AVIF

AV1 Image File Format

Alliance for Open Media · 2019

Compression: lossy
Color depth: 12-bit
Transparency: Yes

✓ Smallest file size of any image format (50% smaller than WebP)
✓ Excellent HDR and wide-gamut color support

TIFF magic bytes: 49 49 2A 00 (little-endian) / 4D 4D 00 2A (big-endian)

AVIF magic bytes: 00 00 00 .. 66 74 79 70 61 76 69 66

Why convert TIFF to AVIF?

TIFF files come from professional environments: scanners, print workflows, archival systems, medical imaging, and scientific instruments. They're large by design — a single high-resolution TIFF from a flatbed scanner or print-ready layout can be 50–200 MB. Moving TIFF images to the web or into modern applications requires converting to something far more compact.

AVIF is the most efficient option for taking high-quality TIFF content to the web. A 100 MB TIFF can become a 2–5 MB AVIF at high quality settings — and the AVIF will often look indistinguishable from the TIFF on screen, even though it's 20–50× smaller. All modern browsers support AVIF, and platforms like Cloudflare Images, imgix, and Shopify CDN serve AVIF by default when supported. For photographers, archivists, and designers who need to share print-quality images online, AVIF is the format that closes the gap between professional quality and web practicality.

Because TIFF is lossless, the AVIF encoder starts from a perfect source. The quality setting you choose at conversion time determines the output fidelity — higher quality means larger files, lower quality means smaller files with some detail loss. For most web use cases, quality settings of 75–85% produce visually excellent results. If the TIFF uses 16-bit color depth, note that AVIF encodes in 8-bit or 10-bit by default, so some dynamic range may be mapped down.

Quality & file size: TIFF to AVIF

Typical file sizes: TIFF 20–70 MB → AVIF 0.8–2 MB.

Converting from lossless TIFF to lossy AVIF will apply compression. We default to 85% quality — visually indistinguishable from the original for most content. If you need pixel-perfect output, consider using a lossless target format instead.

Color depth: TIFF supports 32-bit, AVIF supports 12-bit.

Transparency: TIFF supports transparency. AVIF preserves transparency.

Frequently asked questions

Privacy: how FormatDrop handles your files

Your TIFFfiles are converted 100% inside your browser. They are never uploaded to our servers, never stored, and never seen by anyone other than you. This isn't a privacy policy claim — it's an architectural guarantee: our server has no endpoint that receives file bytes.