CHOOSE SETTINGS. CHECK THE RESULT.
Practical file and media guides
Start with the task you need to finish. Each guide explains the supported workflow, trade-offs and checks to make on the actual download. No account is needed to read a guide or use its tool.
PDF documents
Explore these toolsRecognize scanned PDF text locally without uploading pages
Choose English or Simplified Chinese OCR, select a small PDF page range, balance render resolution and review the recognized TXT against the scan.
Read the guideExtract text from a PDF without uploading the document
Identify a real text layer, select useful pages and review extracted text before saving a local TXT copy. Know when a scan needs OCR instead.
Read the guideAdd a PDF text watermark without flattening the original pages
Mark a draft, choose a page range and check opacity and rotation. Understand why a visible PDF watermark is not redaction or copy protection.
Read the guideCompress a scanned PDF without making the important text unreadable
Choose lossy scan settings, compare real byte savings and inspect every important page before sending an image-only copy.
Read the guideAdd a visible signature or stamp to the correct PDF page
Draw or import an authorized mark, check its page coordinates and distinguish a visible signature image from certificate-based signing.
Read the guideHow to combine photos and PDF pages into one document
A practical checklist for gathering scans, photos and PDFs, checking page order, and exporting a readable document without uploading files.
Read the guideImages and OCR
Explore these toolsConvert SVG to PNG at the right size and background
Prepare a static vector logo, choose output pixel width, preserve transparency and check fonts before using the PNG in a document or upload form.
Read the guidePrepare an ID-style photo and an accurately sized print sheet
Choose a good portrait, review the background mask, set a physical crop and verify an A4 test print before using your photo.
Read the guideChoose JPG, PNG or WebP for a batch of images
Match the output format to photos, transparency and text, compare actual sizes, and keep a complete numbered ZIP of your results.
Read the guideCombine screenshots into a long image or a fitted grid
Arrange screenshots in a useful order, choose a no-crop layout, size the result for readable text and verify a local PNG or JPEG export.
Read the guideHow to meet an image’s pixel dimensions and KB limit
Understand pixels versus file size, choose fit, padding or cropping, and check a batch of images against upload requirements without stretching or uploading originals.
Read the guideWord, Excel and PowerPoint
Explore these toolsConvert Excel and JSON without guessing types or dropping nulls
Choose record headers or row arrays, preserve long identifiers and decide how JSON nulls should become spreadsheet cells.
Read the guideConvert Word content into a reviewable Markdown draft
Move DOCX paragraphs, heading levels and simple tables into Markdown while understanding excluded content, table headers and escaped source characters.
Read the guideExtract PowerPoint text without accidentally including private notes
Export PPTX text in presentation order, distinguish stored shape order from visual order, and include speaker notes or hidden slides only when intended.
Read the guideConvert Word tables to Excel without changing identifiers
Move real DOCX tables into separate XLSX worksheets. Understand text cells, unsupported merges and what happens to the surrounding paragraphs.
Read the guideExport an Excel range as a readable Word table
Choose a visible XLSX sheet and cell range, check saved formula results, and export a plain editable DOCX table without copying hidden private columns.
Read the guideConvert Excel and CSV while preserving identifiers
Choose the right delimiter, understand text-cell imports and formula-safe CSV exports, and review a complete selected worksheet range before downloading.
Read the guideExtract Word body text to TXT and check what is missing
Create a local UTF-8 text working copy of DOCX paragraphs and simple tables while keeping headers, footnotes, pictures and layout limitations explicit.
Read the guideWord, Excel and PDF conversion: choose a supported workflow
Compare local document conversion options, table extraction and OCR. See which Office, PDF, presentation, text and image workflows are supported and which are not.
Read the guideCodes and labels
Explore these toolsHow to turn a CSV into printable barcode labels
Prepare exact identifiers, map name and note columns, choose an A4 label layout and check a printed barcode or QR sample before making a batch.
Read the guideStatic QR codes: a print, download and privacy checklist
Choose PNG or SVG, preserve a QR code’s border, test the final print and understand what a static URL or Wi-Fi code actually exposes.
Read the guideText and table data
Explore these toolsConvert CSV and JSON while preserving identifiers and checking types
Keep leading zeros, select a CSV delimiter, understand JSON null and numeric tokens, and inspect a complete export instead of relying on a small preview.
Read the guideTurn Markdown into a clean standalone HTML reading copy
Preview Markdown headings, lists, code and tables, understand the sanitization rules, and keep both editable Markdown and a readable HTML export.
Read the guideHow to compare two texts without uploading your drafts
Choose line or character comparison, understand whitespace changes and save a complete local report when reviewing two versions of a text.
Read the guideHow to compare two CSV files by a unique ID
Match records by ID or SKU, keep leading zeros, resolve duplicate keys and inspect a cell-level change report from two UTF-8 CSV exports.
Read the guideVideo, audio and subtitles
Explore these toolsMake a short GIF that is useful without becoming huge
Choose a meaningful video interval, balance dimensions and frame count, and check GIF colors and timing in a downloaded animation.
Read the guideConvert SRT and VTT subtitles and fix a constant timing offset
Convert basic captions between SRT and WebVTT, calculate an earlier or later offset, review overlaps and verify the exported subtitle file in your video player.
Read the guideHow to trim an audio recording and export a WAV clip
Choose a recording segment, check start and end times, apply fades and verify a local WAV download without uploading the source audio.
Read the guideFiles and archives
Explore these toolsCreate a ZIP or extract individual files without uploading
Package a small file set, choose compression, inspect supported ZIP archives and save individual files while keeping the original archive intact.
Read the guideVerify a SHA-256 checksum and find duplicate file contents
Compare a trusted SHA-256 hash, understand exact-content duplicate groups and retain a local CSV or JSON checksum report without deleting files.
Read the guideDeveloper tools
Explore these toolsFormat JSON without rounding a large ID
Validate strict JSON, preserve original number tokens and extract one nested value with JSON Pointer instead of executing an expression.
Read the guideConvert YAML and JSON without hidden type changes
Choose YAML 1.2-compatible values, protect numeric identifiers and understand which comments and advanced YAML features cannot survive JSON conversion.
Read the guidePrepare SQL for review without running a query
Choose the matching SQL dialect, format keywords and indentation, and review a downloaded query while keeping database execution separate.
Read the guideChinese and language
Explore these toolsChoose the right Simplified or Traditional Chinese conversion
Understand regional character forms, Taiwan phrase conversion and the limits of dictionary-based 简繁转换 before publishing a text.
Read the guideTurn Chinese text into pinyin and check polyphonic words
Choose tone marks, numeric tones, plain spelling or initials, preserve paragraph breaks and review Mandarin pronunciations before sharing a reading aid.
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