Developer Tools

Open ZIP archives locally, inspect contents, search files and download selected entries without uploading.

Convert non-encrypted 7z archives into standard ZIP files on Convertr servers.

Edit SRT and WebVTT cues, shift timings, validate order, and export captions locally.

Extract public YouTube tags, keywords, hashtags, and basic video metadata when available.

Extract available YouTube captions and transcripts in plain text, SRT, or VTT. No video download.

Fetch public YouTube comments, filter giveaway entries, and pick random winners with a visible seed.

Format, validate, minify and sort JSON locally in your browser.

Validate JSON data against draft 7, 2019-09 and 2020-12 schemas locally in your browser.

Infer TypeScript interfaces or type aliases from pasted JSON locally in your browser.

Convert pasted JSON into XML locally with root and array item controls.

Convert XML into JSON locally with clear attribute, text and array conventions.

Flatten JSON arrays or objects into spreadsheet-ready CSV locally in your browser.

Validate CSV rows, preview columns and format delimited data locally in your browser.

Convert CSV and TSV files into XLSX workbooks with delimiter controls and preview.

Convert calendar .ics and .ical exports into normalized CSV event rows.

Flatten JSON into CSV or convert CSV rows into JSON locally in your browser.

Format, validate and minify XML locally in your browser.

Format SQL queries for MySQL, PostgreSQL, SQL Server, SQLite, BigQuery, Snowflake and Redshift locally in your browser.

Generate SHA-256, SHA-1 and MD5 checksums from text or local files.

Create Code 128, EAN-13 and UPC-A barcodes as PNG or SVG files.

Read barcodes from images, screenshots, labels, receipts, or your camera without uploading.

Read QR codes from images, screenshots, paste, drag and drop, or your camera without uploading.

Create UUID v4 values and copy them in common developer formats.

Generate secure random passwords and memorable passphrases locally in your browser.

Convert epoch timestamps to readable UTC and local dates.

Build, validate and explain 5-field Unix cron schedules with next run previews.

Convert length, weight, temperature, area, volume, speed, data and time units locally in your browser.

Test JavaScript regular expressions against sample text with live matches.

Convert text between uppercase, lowercase, title case, snake_case, kebab-case, camelCase and more.

Encode and decode URLs, query strings and URL components.

Build clean GA4, ad, email, social, partner and QR tracking URLs locally in your browser.

Turn titles, product names and bulk text rows into clean SEO-friendly URL slugs.

Pick exact HEX, RGB and HSL colors from uploaded or pasted images locally.

Encode HTML-sensitive characters and decode named, decimal, and hexadecimal HTML entities locally in your browser.

Create data URIs, raw Base64 strings, HTML img tags and CSS snippets from local images.

Build robots.txt rules, validate directives, and export a clean file for search crawlers.

Check public A, AAAA, CNAME, MX, TXT, NS, CAA, SOA, and SRV DNS records for a domain.

Check whether a domain has sane DMARC and SPF TXT records before sending email.

Inspect status codes, redirects, response headers, cache headers, security headers, content type, and compression.

Convert Markdown syntax into HTML locally in your browser with a live preview.

Convert pasted HTML snippets into clean Markdown locally in your browser.

Render README files, notes, changelogs, and Markdown snippets as selectable-text PDFs.

Compress pasted HTML snippets or local .html files with conservative browser-side options.

Render pasted HTML or uploaded .html files into downloadable PDFs with local headless Chromium.

Minify pasted CSS or local .css files with conservative browser-side compression.

Compress pasted JavaScript or local .js files with Terser running locally in your browser.

Decode JSON Web Token headers and payloads locally in your browser, including exp, nbf and iat timing claims.

Compare two text blocks and inspect line-level differences.

Create favicon.ico, PNG app icons and manifest snippets locally from an image or text initials.

Create a transparent multi-size favicon.ico file from a WebP logo locally in your browser.

Rasterize SVG markup or files into transparent or background PNG output locally.

Create PNG and SVG QR codes for URLs, text, Wi-Fi and contact details.