XLS to AVIF Converter

Create AVIF images from XLS spreadsheet data online

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Next-Gen Compression

AVIF compresses your XLS image up to 10x smaller than JPEG at equal quality — the most efficient format for web publishing.

Online Conversion

No installs required. Convert XLS to AVIF in any browser on convertio.tools — the entire process is web-based.

Automatic Cleanup

Uploaded XLS files are erased after conversion. AVIF outputs are removed from servers within 24 hours.

How to convert XLS to AVIF

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose avif or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your avif file right afterwards

About formats

XLS is the binary spreadsheet format of Microsoft Excel, first introduced with Excel 1.0 for Macintosh in September 1985 and becoming the dominant spreadsheet format worldwide. The format stores workbooks as OLE2 compound document files using the Binary Interchange File Format (BIFF), organizing sheets, cells, formulas, formatting, charts, pivot tables, macros, and metadata across multiple internal streams. Each cell record encodes the cell's value (number, string, boolean, error, or formula), position, and formatting index, while shared string tables and style records reduce redundancy. The format evolved through BIFF versions (BIFF2 through BIFF8), with BIFF8 (Excel 97) establishing the structure used through Excel 2003. XLS supports up to 65,536 rows and 256 columns per sheet, a limit that drove the creation of XLSX. One advantage is universal spreadsheet compatibility — XLS files are recognized by every major spreadsheet application including LibreOffice Calc, Google Sheets, Apple Numbers, and dozens of programming libraries across all platforms. The format's mature feature set is another strength: XLS handles complex formulas, conditional formatting, data validation, named ranges, array formulas, external references, and VBA macros. Although XLSX replaced XLS as the default in Office 2007, the binary format persists in financial institutions, legacy reporting systems, and any environment where Excel 97-2003 compatibility is required.
Developer: Microsoft
Initial release: September 1985
AVIF (AV1 Image File Format) is a modern image format derived from the AV1 video codec, developed by the Alliance for Open Media and specified in February 2019. The format leverages the intra-frame coding tools of AV1 — a royalty-free video codec backed by Google, Apple, Microsoft, Amazon, Netflix, and other major technology companies — to compress still images with substantially higher efficiency than JPEG, PNG, or even WebP. AVIF stores images in the HEIF (High Efficiency Image File Format) container, supporting both lossy and lossless compression, HDR (high dynamic range) with wide color gamuts up to 12-bit depth, alpha transparency, and animated sequences. At equivalent visual quality, AVIF files are typically 30-50% smaller than WebP and 50-70% smaller than JPEG, representing the largest compression improvement in mainstream image formats in over a decade. One advantage is exceptional compression efficiency — AVIF delivers visually indistinguishable images at dramatically lower file sizes, directly reducing bandwidth consumption and improving page load times for web content. The royalty-free licensing model provides another key strength: unlike HEIC/HEIF which relies on patent-encumbered HEVC, AVIF's AV1 foundation is free for anyone to implement without licensing fees. Browser support has reached broad adoption, with Chrome, Firefox, Safari, and Edge all rendering AVIF natively. The format is rapidly gaining adoption for web images where quality-to-size ratio is paramount.
Initial release: February 8, 2019

Frequently Asked Questions

Why convert XLS to AVIF?

AVIF offers the best compression ratio of any image format — your XLS snapshot becomes an ultra-small file with excellent visual clarity.

What supports AVIF files?

Chrome, Firefox, Safari, Edge, and modern image viewers display AVIF. Photoshop and GIMP also support it via plugins or natively.

Is AVIF better than PNG for spreadsheets?

AVIF produces much smaller files. For web use, AVIF is excellent. For archival where lossless is critical, PNG remains preferable.

Is XLS to AVIF free?

Yes — convertio.tools handles XLS to AVIF at no cost. Premium accounts provide batch conversion and higher resolution output.

Does it work on older browsers?

AVIF requires modern browsers (Chrome 85+, Firefox 93+, Safari 16+). For broad compatibility, consider JPG or PNG as well.

XLS to AVIF Quality Rating

5.0 (1 votes)
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