Free online tools.

Adjust gain or normalize the highest sample peak, compare waveforms and listen to the verified WAV. Local processing with no automatic clipping.

Mix stereo into mono, keep only the left or right channel, or duplicate mono into two identical channels. Preview waveforms and download a checked WAV.

Turn a short video into a PNG overview of evenly spaced real frames with their actual timestamps. Choose the grid and review the checked image locally.

Combine CSV tables by exact column names, review missing fields and download a checked CSV. Keep identifiers, original spelling and duplicate rows locally.

Convert JSON records to CSV, choose columns and keep long numbers unchanged. Review nested values explicitly and export locally with formula protection.

List selected filenames, file types, exact sizes and dates without reading file contents. Sort the register, review totals and download a CSV.

Compare options with your own weighted criteria. Review every contribution, see tied scores and download a clear CSV comparison.

Plan local team absences, review daily overlaps and export the date view as CSV. Choose whether weekends count in the view and totals.

Count or add working days using your own weekdays and manual excluded dates. Choose date boundaries and inspect every counted or skipped date.

Turn Markdown into an editable Word document with headings, lists, tables and code. Review the structure and download DOCX locally.

Open a supported conversation JSON export locally. Search chats, inspect branches and save selected text as Markdown without uploading private history.

Review email, phone and IBAN candidates, add exact terms and replace selected values with consistent placeholders before sharing text.

Create ordered, seamless image tiles from a panorama or continuous design. Preview cropping or padding and download the PNG tiles together as ZIP.

Make a real ICO file, PNG icons, web manifest and installation snippet from one image. Review small icon sizes and download one checked ZIP.

Read a script with controlled scrolling, adjustable text size and mirror mode. Pause, restart or enter full screen without a camera or account.

Combine a short audio clip with a cover, title and waveform to make an actual video. Preview and download a local WebM when your browser supports the encoder.

Add an existing SRT or VTT subtitle file to a short video. Captions become visible pixels in a new checked video, with supported audio retained.

View a local GPX route diagram, remove start or end points and export a checked GPX without timestamps or sensor extensions. No online map requests.

Inspect local calendar files, remove exact duplicates and resolve conflicting versions before exporting one ICS with recurring rules and time zones retained.

Save the soundtrack of a local video as a real WAV file. Select a section, listen to the result and download without uploading.

Choose a moment in a local video and export the decoded frame as PNG or JPEG. Review the exact image before downloading.

Add a text or logo watermark to photos, review placement and download new image copies. Batch processing stays on your device.

Explain a screenshot with arrows, text and numbered markers. Undo changes and export one clear PNG without sending the image anywhere.

Read a pixel’s colour, collect a sampled palette and copy HEX, RGB or CSS values from your own image locally.

Check text and background colours against WCAG 2.2 contrast thresholds. See a live preview and copy the CSS colours.

Record who paid and who shares each expense. Calculate balances in exact cents and export a clear settlement list.

Compare one meeting time across cities, including the selected date’s daylight saving rules. Download a local calendar entry.

Create a portable vCard from selected contact details. Preview the fields and download a VCF file for your address book.

Create address, name or storage labels on A4 or Letter. Set exact dimensions, skip used labels and download a printable PDF.

Bundle selected files into a ZIP archive on your device. Check names and download a verified copy without uploading your files.

Give multiple files consistent names, preview every change and download the renamed copies in a ZIP. Your originals stay unchanged.

Calculate a file’s SHA-256 checksum. Compare two files or check a trusted expected hash locally, without uploading their contents.

Read a QR code from a screenshot or image and inspect its contents before opening a link. Local processing without camera access.

Choose the part of a recording you need, listen to the preview and download an actual WAV clip. Audio stays in your browser.

Put recordings in order, choose pauses and combine them into one WAV file. Preview and download the result locally.

Arrange photos in a clear grid, choose spacing and framing, then download a real PNG or JPEG collage. No account or photo upload.

Cover sensitive areas with solid black pixels and download a new PNG. Select areas by dragging or by exact pixel coordinates.

Calibrate a ruler against a known physical length and measure small objects on your screen. Recalibrate after display or zoom changes.

Run several named countdowns for cooking, breaks or everyday tasks. Pause and reset independently, with optional sound.

Create an itemised quote with validity, optional tax and terms. Review the totals and export a ready-to-share document.

Prepare a purchase order with supplier, delivery address, items and agreed prices. Export a clear record for your purchasing workflow.

Record delivered items and quantities with addresses and an order reference. Create a delivery note without invoice prices.

List business expenses, separate employee and company payments, subtract advances and export a reimbursement summary.

Keep discussion notes, decisions and follow-up actions together. Assign responsibilities and dates, then export your meeting record.

Organise tasks with owners, priorities, due dates and progress. Review what is open or overdue and export a project overview.

Compare stock and open orders with demand, lead time and safety stock. Calculate reorder points and suggested quantities.

Compare quantity, unit price, discount, shipping and extra costs on the same basis. Keep delivery times alongside the calculated totals.

Calculate gross margin and markup separately, or find a selling price for your target margin. See the basis behind each percentage.

Find the sales quantity and revenue needed to cover fixed and variable costs. Compare a sales scenario with the break-even point.

Review invisible characters and clean selected formatting artifacts locally. Compare changes before copying or downloading your text.

Calculate daily and weekly work hours, breaks and target differences. Check overnight shifts and export a time sheet.

Enter three values and leave one blank. Solve direct or inverse proportions with clear steps, exact fractions and everyday examples.

Add, subtract, multiply or divide fractions and mixed numbers. See reduced fractions, mixed results and decimal approximations.

Calculate simple or weighted averages, inspect imported numbers and work out a required next grade on your chosen scale.

Extract editable German or English text from images. Crop, rotate and review each result before copying or downloading TXT.

Compare original and revised text by line, word or character. Navigate changes and export a readable difference report.

Clean copied text with a visible choice of whitespace and line-break rules. Keep the original and review the result.

Sort lists alphabetically or naturally, remove duplicates with explicit rules and preserve the spelling of retained entries.

Apply several literal replacement rules sequentially or against the original text. Inspect counts and preview before export.

Listen to text in manageable sections using available browser or system voices. Choose speed, pause and jump between sections.

Draw names, options or numbers with browser cryptography. Choose repeats, multiple draws and a wheel or instant result.

Create a readable email signature with selected fields and templates. Preview and export email HTML or a plain-text alternative.

Create monthly calendars, annual overviews or weekly plans with notes. Preview A4 or Letter and download a printable PDF.

Compare browser-reported displays with what you see, follow a guided connection check and create a local report.

Inspect static display patterns and test touch points without flashing images.

Crop, resize and shorten an animation, then inspect the actual exported GIF.

Turn a short local video selection into an animation, explicitly omitting its sound.

Convert an animation cycle to locally verified MP4 or WebM when the browser supports it.

Inspect an archive locally and extract only the files you select.

Inspect public HTTP response status, selected DNS records and TLS certificate checks from the website's server.

Send selected files or short text to a confirmed browser on another device using WebRTC.

Check the browser microphone signal, timed low-level hints and a decoded, verified local recording.

Check a local camera preview, delivered frame dimensions and an optional snapshot.

Play quiet left, right and stereo signals and record your own listening observations.

Check microphone, camera and speakers, follow a concrete corrective step and compare a repeat check.

Check physical key positions, layout labels and combinations inside a focused test area.

Inspect buttons, wheel events and click intervals in a focused local test area.

Inspect supported JPEG metadata, choose what to remove and verify a new copy without re-encoding the image.

Measure repeated HTTP responses to Vitali Web Tools, compare runs and download a verified report of timings and variations.

Save supported embedded pictures at their original pixel dimensions, individually or as a ZIP.

Combine the visible content of two PDFs as foreground or background with controlled page mapping.

Create a checked linearised PDF for Fast Web View while retaining text, images and vectors.

Turn your text into a paginated PDF with headings, lists, embedded fonts and a real output preview.

Convert saved HTML or pasted webpage content into a local PDF reading layout.

Select unwanted pages, review the remaining sequence and save a separate PDF.

Save selected pages as one separate PDF in their original order.

Find the right local conversion for PDF, images, editable Office output, text or saved HTML.

Choose your source format and create a PDF locally with the matching converter and output preview.

Arrange JPEG photos as PDF pages, choose paper and margins, and keep the original image detail.

Create PDF pages from PNG images with a choice of transparent or white backgrounds.

Turn supported still WebP images into PDF pages with controlled size, order and margins.

Convert supported HEIC photos locally and review their orientation before creating a PDF.

Create a PDF from supported self-contained SVG drawings, with a checked raster preview.

Convert supported single- and multi-page TIFF images into ordered PDF pages locally.

Turn a TXT file or pasted plain text into a readable PDF with selectable text and embedded fonts.

Convert Markdown headings, lists, code and text tables into a paginated PDF reading copy.

Read supported RTF text and basic emphasis into a new PDF layout with an actual output preview.

Make a PDF reading copy of an unencrypted EPUB in its defined chapter order, with omissions shown before export.

Rotate selected original PDF pages by 90, 180 or 270 degrees.

Set exact visible page crops by dragging, margins or individual page settings.

Add visible page numbers with exclusions, Roman numerals and checked placement.

Place your own text or image watermark with opacity, rotation and layer controls.

Compare actual PDF sizes after structural optimisation or chosen image recompression.

Arrange supported JPEG, PNG, WebP, HEIC, SVG and TIFF images as one PDF or separate PDFs in a ZIP.

Render selected PDF pages as PNG or JPEG with exact resolution and background choices.

Reorder, duplicate, remove and insert PDF pages with explicit document-feature review.

Change letters, numbers and text directly in your PDF. Its original font is retained where the file and the required characters allow it.

Draw, type or import a visible signature and place it precisely.

Fill actual PDF fields or label a flat form; choose editable or flat export.

Build real interactive PDF fields on an existing PDF or a blank page.

Recognise scanned English or German pages and add a positioned searchable text layer.

Remove PDF encryption using an opening or owner password you already know.

Encrypt a PDF with an opening password using AES-256 and optional reader permissions.

Reconstruct native PDF text as editable DOCX paragraphs, lists and confirmed tables, or use positioned text frames with raster graphics. Review reading order and correct text before export.

Convert DOCX or DOC into PDF locally; check fonts, tables and page breaks in the actual output.

Convert PPTX or PPT slides into static PDF pages; inspect the slide format, charts and text.

Create PPTX slides as faithful page images or reconstruct editable text and confirmed tables over raster graphics. Review objects and page fitting before export.

Convert XLSX or XLS using the workbook's print settings; review totals, dates and page divisions.

Create a PDF from a DOCX document with its sections, tables and images; review font substitution and pagination.

Convert supported older Word DOC files directly to PDF locally, then compare headers, text and page breaks.

Turn PPTX slides into static PDF pages in their source aspect ratio. Hidden slides and speaker notes are excluded.

Open supported legacy PPT presentations locally and export their visible slides as PDF pages.

Create a PDF from XLSX print areas and page settings; check recalculated totals and number formats before sharing.

Convert supported legacy XLS workbooks to PDF with their print layout; review formulas, dates and page breaks.

Convert OpenDocument text files into PDF locally; compare page styles, headers and tables in the actual output.

Export supported OpenDocument drawings as PDF pages and review text, shapes and page dimensions.

Convert OpenDocument spreadsheets with their print settings; review recalculated values, dates and chart pages.

Convert OpenDocument presentations to static PDF pages; check visible slide order, charts and fonts.

Paste text to count words and characters instantly and keep a writing goal in view.

Switch between uppercase, lowercase, title and sentence case.

Readable JSON, precise validation. Your numbers stay intact.

Encode Unicode text or decode Base64 back into readable text.

Encode a URL component or work with a complete URL.

Generate cryptographically random version 4 UUIDs.

Get a SHA-256 fingerprint of your exact UTF-8 text.

Find a percentage, a share or the change between two values.

Count calendar days between two dates, without timezone surprises.

Convert length, mass, temperature, volume, area and speed.

Explore how a starting balance and regular savings could grow.

Fit an image or image-only PDF to confirmed upload limits, or choose image compression quality.

Set new pixel dimensions while keeping the right proportions.

Convert image batches, including HEIC and supported AVIF, with checked local exports.

Arrange PDFs, rotate, flip or remove individual pages and combine them into one document.

Split a PDF into confirmed named groups, or extract pages in your chosen order.

Create a single static QR code or turn a spreadsheet into PNG codes and print labels.

Create a strong random password, right on your device.

Recognize English or German speech locally, review timestamps and export text or subtitles.

Match photo sidecars, review dates and create an organized copy of your export.

Align pages and inspect text changes alongside actual visual differences.

Burn confirmed redactions into fresh page images and inspect every page before export.

Recognize schedule entries in images, PDFs or tables and confirm dates before creating an ICS file.

Find matching overlaps, review every seam and export complete joined screenshots.

Inspect video tracks and create a checked MP4 or WebM within a confirmed size target.

Read UBL/CII invoices locally and optionally validate the supported XRechnung XML profile with official rules.

Recognize a table in an image or PDF and review its cells before exporting.

Plan straight cuts for boards or sticks with kerf, rotation and grain constraints.

Straighten photographed pages, correct the background and assemble a PDF.

Find byte-identical files and review separate suggestions for similar photos.

Repair SRT and WebVTT timing with editable cues and drift correction.

Find missing, new, changed and ambiguous rows across two spreadsheets.

Inspect encodings, repair table structure and preserve your identifiers.

Turn an image or selected PDF page into accurately sized A4 or Letter poster tiles.

Check PDF structure, size and portal limits, then flatten supported forms only after review.

Lighten neutral backgrounds, protect important areas and compare each selected page before export.

Inspect source text and page positions, correct the reading order and review cleanup before copying or exporting TXT and Markdown.

Select text in the page preview to inspect available PDF font names, embedding evidence, transformed size and source locations.

Review embedded highlights and comments with their page sources, edit questions or explicit cloze ranges, and export checked Anki-compatible text files.

Choose a grid, review every cut and turn multi-slide handouts into readable PDF pages with optional note space.

Review label regions, rotate them and fit them proportionally onto 4 × 6 inch, 100 × 150 mm or custom PDF pages.

Review heading candidates, edit a chapter hierarchy and export real bookmarks with optional linked contents pages.

Fill PDF text fields or add positioned text from CSV/XLSX rows. Preview individual records, then generate separate PDFs and a ZIP with a complete record manifest locally.

Extract a text-based PDF statement into editable transactions with page references, original values and separate account/currency balance checks. Export a local Excel workbook or an explicitly configured CSV.

Add names, arrange players on the courts and share the line-up as an image.

Plan round-robin and knockout tournaments. Check playing fields and rest breaks, record results and export the same schedule.

Turn your own words and clues into a playable puzzle. Review spelling rules, check every placement and print matching worksheets and solutions.

Open an exported chat locally, review its dates and attachments, search messages and create a selected PDF extract or a private activity chart.

Arrange guests and tables, keep fixed seats and check who can sit together. Review automatic assignments and print your plan, table signs and place cards.

Suggest dates, collect responses and confirm a time for your group.

Keep track of what is needed, what is bought and who brings how much.

Collect wishes from any shop and let guests reserve available gifts.