File

Drop a CSV, see row / column counts, per-column type inference, null counts, unique counts, and full-row duplicate detection — all locally.

Drop a file and paste an expected SHA-1 / 256 / 384 / 512 — see if the actual hash matches. Useful before installing downloaded binaries.

Drop a PDF and pull just the pages you want — `1-3, 5, 7-10` — into a fresh PDF. All in your browser, no upload.

Drop two or more PDFs, reorder them with the arrow buttons, and download a single merged PDF — all in your browser, no upload.

Drop a few files into the browser and download them as a single .zip — no upload, no install, fast compression.

Generate 10 favicon PNG sizes (16, 32, 48, 64, 96, 128, 180, 192, 256, 512) from one source image — copy the HTML snippet.

Convert PNG/JPG to WebP (or back) with an adjustable quality slider — runs in your browser via canvas.

Split a large CSV into smaller chunks by row count — repeat the header on each chunk, download all at once.

Combine multiple JPG / PNG images into a single PDF with adjustable page size, orientation, and fit.

Drop a ZIP and see every file inside — sizes, contents, and per-file download — without unpacking it locally.

Split a large file into smaller chunks to bypass attachment or upload size limits.

Open text files in legacy encodings (EUC-KR, Shift_JIS, Windows-1252…) as readable UTF-8.

Compute SHA-1, SHA-256, and SHA-512 checksums of any file.

Convert CSV to JSON and JSON back to CSV, with a delimiter option.

Convert between LF, CRLF, and CR line endings and add or remove a UTF-8 BOM — with per-style counts so you can see how mixed the input was.

Drop a file to identify its true format from its magic bytes — and catch files whose extension or declared MIME type lies.