Everything runs instantly in your browser. No install, no signup, no upload.
Resize, convert, or compress dozens of images at once.
Image · BatchStrip editor metadata, comments, and excess precision from a batch of SVGs.
PDF · BatchCombine multiple PDFs into one, then optionally shrink the size — lossless or aggressive.
Data · BatchUpload multiple CSV files and convert them all to JSON at once.
Data · ConvertConvert JSON to YAML or YAML to JSON, including multi-document YAML.
Data · ConvertConvert between comma and tab-delimited data with proper quote handling.
Data · BatchPaste several JSON snippets at once and validate and pretty-print every one, with the exact line and column of any error.
Data · BatchValidate several JSON documents against one schema in a single pass. Completely free, no per-document limit.
Encode · DecodeConvert between text and Base64, with batch line-by-line support.
Encode · DecodePercent-encode or decode a whole list of URLs or query values at once.
ContentEnter titles, links, and dates to generate a valid RSS 2.0 feed.
SEOPaste a list of URLs and generate a sitemap.xml instantly.
SEO · BatchPaste several sitemap.xml files at once and validate each against the Sitemap Protocol — including lastmod dates that are uniform or in the future.
SEOSet disallowed paths, add your sitemap, and optionally block AI crawlers like GPTBot and ClaudeBot.
SEO · AITurn a list of your pages into a structured llms.txt index for AI models to read.
SEOList your team, tech stack, and a note — generate a valid humans.txt file. No email or signup required.
SEO · BatchPaste several page titles and descriptions at once and check every one against safe length ranges. No URL fetch.
SEO · BatchPaste meta tags for several pages at once and preview the social share card for every one. No URL fetch — works on localhost.
SEO · BatchPaste a list of titles and generate a unique social share image for every one. Download as a ZIP.
Data · BatchPaste several package.json files and find dependencies whose versions disagree across them.
Data · BatchPaste many JSON records and compare them — optional fields, type drift, always-null fields.
SEO · BatchPaste many posts' front matter at once and compare them — naming drift, type drift, mixed date formats.
SEO · BatchPaste several pages' HTML at once and check H1-H6 hierarchy for every page in one pass.
NetworkCheck IP, DNS records, and SSL expiry for many domains at once.
SEO · Auto-crawlEnter a URL — auto-generates sitemap.xml, rss.xml, and llms.txt, plus finds broken links and missing meta tags.
Encode · Decode · BatchDecode multiple JWTs at once — header, payload, and expiry status for each.
Batch · No-uploadGenerate QR codes for a whole list of URLs or text at once, no upload required.
Batch · No-uploadGenerate UPC, EAN-13, or Code128 barcodes for a whole list of codes at once.
Text · BatchPaste several original/modified text pairs at once and see a line-by-line diff for every one.