QiLing Tools🔁Format Converters
Convert between PDF, image, audio, video, document and data formats, plus number bases, units, encodings and time zones.
56 tools tagged "Converters"
🖼️PDF to ImageFree 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 PDFFree 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 ImageFree online image converter: batch convert JPG, PNG, WebP, GIF and BMP images to JPG, PNG or WebP. Processed locally, no upload.🔁Convert AudioFree online audio converter: convert between MP3, WAV, M4A, AAC, FLAC, OGG and OPUS with selectable bitrate. Powered by FFmpeg, processed locally, no upload.🔁Convert VideoFree online video converter: convert MOV, MKV, AVI, FLV, WebM and more to MP4 or WebM. Powered by FFmpeg, processed locally, no upload.🎞️Video to GIFFree 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 AudioFree online tool to extract audio from MP4, MOV and other videos as MP3, M4A or WAV. Processed locally, no upload.🎬GIF to VideoFree 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 ConverterFree online Unix timestamp converter: convert timestamps and dates, auto-detect seconds or milliseconds, and show local, UTC, ISO 8601 and relative time.🔢Base ConverterFree online number base converter: convert between binary, octal, decimal, hexadecimal and any base 2–36. Uses BigInt for huge integers, computed locally.🎨Color ConverterFree 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 Base64Free 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 MakerFree 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 JPGFree 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 PNGFree 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 ConverterFree online unit converter: length, area, volume, weight, temperature, time, speed, data, pressure, energy and angle — one value converts every unit at once.🏛️Roman NumeralsFree 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 JSONFree online CSV ⇄ JSON converter: handles quotes, commas and newlines inside fields, auto-detects the delimiter, with a header toggle and type conversion.🔷JSON to TypeScriptFree online JSON to TypeScript converter: interfaces or types from JSON, nested objects split into named interfaces, optional fields inferred, Go structs too.🌐Time Zone ConverterFree 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 VideoFree 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 ImageFree 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 ImageFree 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 ConverterFree online YAML and JSON converter: multi-document YAML, anchors, aliases and merge keys, errors with line and column, plus indent, sorting and folding.繁Simplified ↔ Traditional ChineseFree online Chinese converter powered by OpenCC: Simplified ↔ Traditional for Taiwan, Hong Kong or OpenCC standard, with optional Taiwan vocabulary.📐Resize VideoFree 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 FramesFree 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 SVGFree 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 ConverterFree 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 PowerPointFree 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 WordFree 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 MakerFree 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 ExcelFree 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 MarkdownConvert 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 CircleConvert 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 ConverterConvert 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 ConverterFree 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 PDFConvert 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 EPUBConvert PDF to a reflowable EPUB 3 e-book online: rebuilt paragraphs and headings, chapters from bookmarks, no headers or footers, images, cover and metadata.⅓Decimal to Fraction ConverterConvert 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 ConverterConvert text, hex or files to Base32, Base58Check, Base62, Base36, Ascii85, Z85, binary, Quoted-Printable, Punycode and more, with auto-detection on decode.💥PDF ⇄ CBZ ComicsConvert 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 ConverterConvert 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 HTMLConvert 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 ConverterConvert 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 SVGConvert 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 ConverterConvert 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 WebPConvert video to animated WebP or APNG online: trim, set frame rate, width, quality and loops, estimate size, preview and compare with GIF.🎷Audio to MIDITurn humming, whistling, singing or a single instrument into MIDI online: pitch and onset detection, key snapping, quantize, editable piano roll, .mid export.⚡Batch Image ProcessingFree 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 ConverterFree 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 ConverterFree online Word converter: read headings, lists, tables, images and footnotes out of a docx and export Markdown, single-file HTML or plain text.📽️PowerPoint ConverterFree 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 EPUBFree 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 ConverterFree 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 BrowserFree 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.