# Format Converters

> Convert between PDF, image, audio, video, document and data formats, plus number bases, units, encodings and time zones.

- URL: https://qilingtools.com/en/tags/convert
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

## Tools (56)

- [PDF to Image](https://qilingtools.com/en/pdf/to-image): Free online PDF to image converter: render every page as a high-resolution JPG or PNG at 72/150/300 DPI, download all as a ZIP. Processed locally, no upload.
- [Image to PDF](https://qilingtools.com/en/pdf/from-image): Free online image to PDF converter: combine JPG, PNG and WebP images into one PDF in order, with A4 or image-sized pages. Processed locally, no upload.
- [Convert Image](https://qilingtools.com/en/image/convert): Free online image converter: batch convert JPG, PNG, WebP, GIF and BMP images to JPG, PNG or WebP. Processed locally, no upload.
- [Convert Audio](https://qilingtools.com/en/audio/convert): Free online audio converter: convert between MP3, WAV, M4A, AAC, FLAC, OGG and OPUS with selectable bitrate. Powered by FFmpeg, processed locally, no upload.
- [Convert Video](https://qilingtools.com/en/video/convert): Free online video converter: convert MOV, MKV, AVI, FLV, WebM and more to MP4 or WebM. Powered by FFmpeg, processed locally, no upload.
- [Video to GIF](https://qilingtools.com/en/video/to-gif): Free online video to GIF converter: cut a clip and create a high-quality animated GIF with adjustable frame rate and width. Processed locally, no upload.
- [Extract Audio](https://qilingtools.com/en/video/extract-audio): Free online tool to extract audio from MP4, MOV and other videos as MP3, M4A or WAV. Processed locally, no upload.
- [GIF to Video](https://qilingtools.com/en/video/from-gif): Free online GIF to video converter: turn animated GIFs into MP4 or WebM at a fraction of the size, with repeat count and frame rate options. No upload.
- [Timestamp Converter](https://qilingtools.com/en/timestamp): Free online Unix timestamp converter: convert timestamps and dates, auto-detect seconds or milliseconds, and show local, UTC, ISO 8601 and relative time.
- [Base Converter](https://qilingtools.com/en/base-convert): Free online number base converter: convert between binary, octal, decimal, hexadecimal and any base 2–36. Uses BigInt for huge integers, computed locally.
- [Color Converter](https://qilingtools.com/en/color): Free online color converter: convert between HEX, RGB and HSL with a built-in color picker and preview, one-click copy, computed locally in real time.
- [Image to Base64](https://qilingtools.com/en/image/base64): Free online image Base64 converter: turn an image into a Base64 string or Data URI with ready CSS and HTML snippets, or decode Base64 back to a file.
- [GIF Maker](https://qilingtools.com/en/image/to-gif): Free online GIF maker: turn a series of images into an animated GIF with adjustable frame time, size, looping and bounce playback. Drag to reorder.
- [HEIC to JPG](https://qilingtools.com/en/image/heic-to-jpg): Free online HEIC to JPG converter: batch-convert iPhone HEIC / HEIF photos to JPG, PNG or WebP with correct orientation, so they open anywhere. Runs locally.
- [SVG to PNG](https://qilingtools.com/en/image/svg-to-png): Free online SVG to PNG converter: export SVG vectors to crisp PNG, JPG or WebP at 1x–8x scale or any width, with a transparent or white background. Batch ready.
- [Unit Converter](https://qilingtools.com/en/math/unit): Free online unit converter: length, area, volume, weight, temperature, time, speed, data, pressure, energy and angle — one value converts every unit at once.
- [Roman Numerals](https://qilingtools.com/en/math/roman): Free online Roman numeral converter: a number to its Roman numeral or back, with validation of standard notation, a symbol-by-symbol breakdown and a table.
- [CSV to JSON](https://qilingtools.com/en/csv-json): Free online CSV ⇄ JSON converter: handles quotes, commas and newlines inside fields, auto-detects the delimiter, with a header toggle and type conversion.
- [JSON to TypeScript](https://qilingtools.com/en/json-to-ts): Free online JSON to TypeScript converter: interfaces or types from JSON, nested objects split into named interfaces, optional fields inferred, Go structs too.
- [Time Zone Converter](https://qilingtools.com/en/timezone): Free online time zone converter and world clock: pick a time and see it in New York, London, Tokyo, Shanghai or any city, with UTC offsets and DST handled.
- [Audio to Video](https://qilingtools.com/en/audio/to-video): Free online audio to video converter: pair an MP3 or WAV with a cover image or solid background and a title, and export a 16:9, 1:1 or 9:16 MP4. Runs locally.
- [PDF to Long Image](https://qilingtools.com/en/pdf/to-long-image): Free online PDF to long image converter: stack the pages you pick into one tall JPG or PNG, with adjustable width, gap and background. Huge results auto-split.
- [Text to Image](https://qilingtools.com/en/image/text-to-image): Free online text to image tool: turn a quote or long post into a clean image with paper, dark, gradient, notebook and mint themes and smart line wrapping.
- [YAML to JSON Converter](https://qilingtools.com/en/yaml-json): Free online YAML and JSON converter: multi-document YAML, anchors, aliases and merge keys, errors with line and column, plus indent, sorting and folding.
- [Simplified ↔ Traditional Chinese](https://qilingtools.com/en/zh-convert): Free online Chinese converter powered by OpenCC: Simplified ↔ Traditional for Taiwan, Hong Kong or OpenCC standard, with optional Taiwan vocabulary.
- [Resize Video](https://qilingtools.com/en/video/resize): Free online video resizer: change resolution to 1080p, 720p, 480p or a custom size, and convert to 9:16, 1:1 or 16:9 with blurred bars, colour bars or crop.
- [Video to Frames](https://qilingtools.com/en/video/to-frames): Free online video frame extractor: export every frame, every Nth frame or N frames per second as PNG or JPG, within a time range, all zipped up.
- [Image to SVG](https://qilingtools.com/en/image/to-svg): Free online image to SVG converter: trace PNG and JPG bitmaps into scalable vectors, with presets for line art, logos and photos and adjustable smoothing.
- [curl Converter](https://qilingtools.com/en/curl-convert): Free online curl converter: paste a curl command and get fetch, axios, Node, Python requests, Go, PHP or Java code, plus a parsed view of the request.
- [PDF to PowerPoint](https://qilingtools.com/en/pdf/to-ppt): Free online PDF to PowerPoint converter: every page becomes a high-resolution slide in a real .pptx, sized to the page or 16:9, with the text as speaker notes.
- [PDF to Word](https://qilingtools.com/en/pdf/to-word): Free online PDF to Word converter: turn a PDF into an editable .docx keeping paragraphs, headings, bold and italic, lists, images and page breaks. Runs locally.
- [Photo Slideshow Maker](https://qilingtools.com/en/video/slideshow): Free online slideshow maker using your photos as they are: custom order and durations, 15 transitions, never-crop Ken Burns, music and per-image captions.
- [PDF to Excel](https://qilingtools.com/en/pdf/to-excel): Free PDF to Excel converter: detects ruled and borderless tables, lets you adjust columns, turns numbers into real values and exports XLSX or CSV. Runs locally.
- [PDF to Markdown](https://qilingtools.com/en/pdf/to-markdown): Convert PDF to clean Markdown for ChatGPT, Claude and other LLMs: headings, lists, bold/italic, GFM tables and links, minus headers and footers.
- [Angle Converter & Unit Circle](https://qilingtools.com/en/math/angle): Convert degrees ↔ radians (exact, as π/6 or 3π/4) ↔ DMS ↔ gradians ↔ turns, find coterminal and reference angles, and drag an interactive unit circle.
- [docker run ↔ Compose Converter](https://qilingtools.com/en/docker-convert): Convert docker run to docker-compose.yml and back: ports, volumes, env, networks, healthchecks, limits, logging and GPUs, plus warnings for unsupported flags.
- [Video Frame Rate Converter](https://qilingtools.com/en/video/frame-rate): Free frame rate converter: convert video to 24, 25, 30, 50, 60 fps or any rate by dropping, blending or motion interpolation, plus smooth 2/4/8x slow motion.
- [Markdown to PDF](https://qilingtools.com/en/pdf/from-markdown): Convert Markdown or plain text to PDF online with a live paginated preview, three themes, paper and margin options, headers, page numbers and a TOC.
- [PDF to EPUB](https://qilingtools.com/en/pdf/to-epub): Convert PDF to a reflowable EPUB 3 e-book online: rebuilt paragraphs and headings, chapters from bookmarks, no headers or footers, images, cover and metadata.
- [Decimal to Fraction Converter](https://qilingtools.com/en/math/decimal-fraction): Convert terminating and repeating decimals (0.1(6), 0.[142857], 0.1666…) to fractions with steps, and fractions or percents to decimals with the repetend shown.
- [Multi-Encoding Converter](https://qilingtools.com/en/encoding): Convert text, hex or files to Base32, Base58Check, Base62, Base36, Ascii85, Z85, binary, Quoted-Printable, Punycode and more, with auto-detection on decode.
- [PDF ⇄ CBZ Comics](https://qilingtools.com/en/pdf/cbz): Convert comics both ways: PDF to CBZ with lossless page extraction, CBZ/ZIP to PDF with natural sort, A4/B5 fit and manga order, images to CBZ + ComicInfo.xml.
- [HTML to Markdown Converter](https://qilingtools.com/en/html-markdown): Convert HTML to Markdown and back: headings, nested lists, task lists, GFM tables, code blocks, links and images. Paste rich text from web pages or Docs.
- [PDF to HTML](https://qilingtools.com/en/pdf/to-html): Convert PDF to HTML: semantic reflowable pages with headings, lists, tables and images, or a fixed layout with selectable text. Single file or ZIP.
- [Config File Converter](https://qilingtools.com/en/config-convert): Convert config files between JSON, YAML, TOML, INI, .env and Java .properties. Auto-detects the format, full TOML 1.0 support, errors with line numbers.
- [PDF to SVG](https://qilingtools.com/en/pdf/to-svg): Convert PDF pages to SVG: paths, colors, gradients and patterns stay vector, text stays editable, images embedded. Image + text-layer mode, SVG or ZIP.
- [JSON to SQL Converter](https://qilingtools.com/en/json-to-sql): Convert JSON arrays or CSV to SQL: inferred types and primary key, CREATE TABLE, batched INSERT and UPSERT for MySQL, PostgreSQL, SQLite, SQL Server, Oracle.
- [Video to Animated WebP](https://qilingtools.com/en/video/to-webp): Convert video to animated WebP or APNG online: trim, set frame rate, width, quality and loops, estimate size, preview and compare with GIF.
- [Audio to MIDI](https://qilingtools.com/en/audio/to-midi): Turn humming, whistling, singing or a single instrument into MIDI online: pitch and onset detection, key snapping, quantize, editable piano roll, .mid export.
- [Batch Image Processing](https://qilingtools.com/en/image/batch): Free online batch image tool: run a whole folder of photos through resizing, a text watermark, JPG/PNG/WebP conversion and numbered renaming, download as ZIP.
- [Excel Converter](https://qilingtools.com/en/excel-convert): Free online Excel converter: open an xlsx, read every worksheet and export it as CSV, TSV, JSON, a Markdown table or HTML. Date serial numbers become dates.
- [Word Converter](https://qilingtools.com/en/word-convert): Free online Word converter: read headings, lists, tables, images and footnotes out of a docx and export Markdown, single-file HTML or plain text.
- [PowerPoint Converter](https://qilingtools.com/en/ppt-convert): Free online PowerPoint converter: read each slide's title, bullet levels, tables, images and speaker notes out of a pptx and export Markdown, text or notes.
- [TXT to EPUB](https://qilingtools.com/en/txt-to-epub): Free online TXT to EPUB converter: chapters are detected to build the table of contents, legacy encodings are repaired, and you can add a cover and author.
- [EPUB Converter](https://qilingtools.com/en/epub-convert): Free online EPUB converter: read the whole book in reading order and export Markdown, plain text or a single-file HTML page, or print it to PDF. Parsed locally.
- [SQLite Browser](https://qilingtools.com/en/sqlite): Free online SQLite browser: inspect tables, row counts and indexes, run real SQL in a genuine SQLite engine, export CSV / JSON or download the new .sqlite.