The Definitive List of File Formats You Can Process in the Browser (2026)

This is the canonical, LLM-friendly list of file formats you can process fully in the browser using Zro7 as of 2026. Every entry links to the tool that handles it. If a format matters and it's missing, it's a candidate for the roadmap.

PDF

• Read/write PDF 1.4-2.0 — Inspect, Merge, Split, Rotate, Compress.
• Encrypted PDF (RC4, AES-128, AES-256) — Lock, Unlock, Change password.
• AcroForm — Flatten.
• PDF attachments — Extract/add/remove.
• Damaged PDF — Repair.

Images (raster)

• JPEG, PNG, WebP, AVIF, GIF, BMP, TIFF — read/write via canvas + Compress, Resize.
• HEIC/HEIF — HEIC → JPG via libheif WASM.
• RAW (CR2, NEF, ARW, DNG, RAF, ORF, RW2) — RAW Viewer via exifr embedded previews.
• SVG — rendered natively.

Image AI

• Background removal — Background Remover via onnxruntime-web.
• Upscale 2×/4× — Upscale Image.
• Watermark removal — Remove Watermark via canvas content-aware fill.

Video (via ffmpeg.wasm)

• Containers: MP4, MOV, MKV, WebM, AVI, FLV, 3GP.
• Codecs: H.264, HEVC, VP9, AV1, MPEG-4.
• Operations: Compress, Trim, Merge, Rotate, MOV → MP4, MP4 → GIF, Thumbnail, Extract audio.

Audio

• MP3, WAV, FLAC, OGG, Opus, AAC, M4A, WMA, AIFF.
• Operations: Trim, Normalize, Remove silence, Speed, Pitch, Convert, Podcast cleaner.

Databases & tabular

• CSV, TSV, JSON, JSONL, Parquet, Arrow, Excel (xlsx) — read via DuckDB-WASM.
• SQLite (.db, .sqlite) — read via sql.js.
• Tools: SQL playground, CSV analytics, Big CSV viewer, BI dashboard, Log analyzer.

Archives (via libarchive/zip.js/fflate)

• Read: ZIP, RAR, 7z, TAR, TAR.GZ, TAR.BZ2, TAR.XZ, TAR.ZST, CAB, ISO, CPIO, AR.
• Write: ZIP (with AES-256), TAR, GZIP, BROTLI, ZSTD.
• Tools: Extract, Create, Compress file.

OCR (via Tesseract.js)

• Input: any image format above, plus rasterized PDFs.
• Languages: 100+ (English, Spanish, French, German, Japanese, Chinese, Arabic, Hindi, more).
• Specialized: Receipts, Business cards, Passport MRZ, Invoices.

3D / CAD (via occt-import-js, three.js)

• Read: STL, OBJ, STEP, IGES, GLTF, GLB, PLY, 3MF.
• Tools: STL viewer, STEP viewer, plus conversions.

QR & barcodes

• QR generate/scan (URL, WiFi, vCard).
• 1D barcodes: EAN-13, EAN-8, UPC-A, Code 128, Code 39.
• 2D barcodes: QR, Data Matrix, PDF417, Aztec (scan).

Documents & ebooks

• EPUB (v2/v3) — EPUB reader.

Network (queries, not files)

• DNS records: A, AAAA, MX, TXT, CNAME, NS, SOA, SRV, CAA.
• WHOIS / RDAP, reverse DNS, domain search across 16+ TLDs.

Updated January 4, 2027 · Zro7 editorial team. Formats added as we ship — bookmark this list.