File tools
Convert, compress, split or sign a file — PDFs, audio, video and archives, each in the format the next step expects. The awkward part is rarely the conversion itself but the constraint around it: a size ceiling, a codec a player refuses, a signature a form will accept.
PDF (19)
All 19 tools →Merge PDFCombine several PDF files into one.Compress PDFShrink a PDF without losing anything: identical fonts and images repeated by a merge are merged back into one. A whole folder at once.Crop a PDFDrag a frame on the page to set the crop, or let the white margins be detected. Several documents at once, to the same measurements.Delete PDF pagesRemove the pages you name and keep everything else, without re-scanning the document.Extract links from a PDFList every external link a PDF carries, taken from its annotations rather than its text.Extract PDF pagesPick the pages from their thumbnails, then save them as one PDF — or as one PDF per page. Metadata included.
Audio ConverterConvert between MP3, WAV, M4A, OGG and FLAC, and change the sample rate or the channels.Burn subtitles into a videoPaint an SRT or VTT track into the picture, so it plays on any player.Change video speedSpeed a video or audio file up or down, hearing the result live before anything is encoded. The pitch follows or stays natural, your choice.CSV to SRT converterRebuild a valid SRT subtitle file from a CSV of index, start, end and text. Times accept either the hh:mm:ss,mmm format or a plain number of seconds, a header row is skipped automatically, and cues are renumbered in order. Perfect for turning a translated or edited spreadsheet back into subtitles.Extract AudioPull the audio track out of a video as MP3, AAC or WAV.Merge AudioJoin several MP3, WAV, M4A, FLAC or OGG files end to end, and download the result as MP3, WAV, M4A, OGG or FLAC.
CSV to ExcelConvert a CSV file (or pasted CSV) into a real .xlsx spreadsheet.Extract Excel formulasList every formula in a workbook with its sheet and cell, to audit or document it. Reads Excel (XLSX, XLSM), OpenDocument (ODS) and Apple Numbers, in any language — a French SI() or a German WENN() comes out as written. XLS and XLSB carry formulas that this reader cannot always surface, and CSV or TSV hold none by design: they store results, never formulas.Excel to CSVConvert an .xlsx or .xls sheet to CSV, pick which sheet.Convert formulas to valuesReplaces every formula by the result Excel last saved with it, so the sheet keeps its numbers but no longer shows how they were obtained — useful before sending a file out. Nothing is recalculated: a workbook saved without cached results comes back empty. Works with Excel (XLSX, XLS, XLSM, XLSB), OpenDocument (ODS), Apple Numbers, CSV and TSV — though CSV and TSV never hold formulas to begin with.Merge Excel filesCombine several workbooks into one, keeping every sheet and renaming on collision.Numbers to XLSXOpen an Apple Numbers file and save it as Excel .xlsx — no Mac required.
Contacts (5)
CSV to VCFBuild a vCard file your phone can import from a spreadsheet of contacts.Merge VCF filesCombine several vCard files into a single address book you can import once.VCF to CSVTurn a vCard address book into a spreadsheet-ready CSV, one contact per row.VCF to JSONExport a vCard address book as structured JSON, with emails and phones as arrays.VCF viewerOpen a .vcf file and read the contacts it holds, without importing them anywhere.
Calendar (5)
CSV to ICSTurn a spreadsheet of dates into a calendar file any app can subscribe to.ICS to CSVTurn a calendar file into a spreadsheet of events, with real dates instead of ICS stamps.ICS to JSONExport calendar events as JSON, with each ICS timestamp converted to ISO-8601.ICS viewerOpen a calendar invitation or export and read its events before importing anything.Merge ICS filesCombine several calendar files into one, keeping every event.
Email (6)
Extract email attachmentsPull every attachment out of a saved .eml message and download them separately.EML to HTMLSave the HTML part of an email as a standalone page you can open in a browser.EML to textPull the readable text out of a saved email, decoding quoted-printable and base64 bodies.EML viewerOpen a saved email and read it — sender, date, subject and body — with no mail client.MBOX to EMLSplit an mbox export into one .eml file per message, ready to open individually.MBOX viewerList every message in an mbox export — sender, date and subject — without a mail client.
Create a TAR fileBundle several files into an uncompressed .tar, the archive Unix tooling expects.Create a ZIP fileBundle several files into one ZIP, choosing how hard to compress them.Extract a ZIP fileOpen a ZIP, TAR or GZIP archive and download any file inside it, one by one.TAR to ZIPRepack a .tar, .tar.gz or .tgz archive as a ZIP that Windows opens without extra software.ZIP to TARRepack a ZIP as an uncompressed .tar, the format most Unix tooling expects.File MergerJoin file pieces (or any files) back into one, in the order you set.