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Practical Toolbox
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AI model benchmarks
Compare open benchmark results, versions, and sources for language, image, video, and speech models.
All tools
Network Connection Check
Identify the public IP, address family, latency, and connection stability
Open tool → Network queryDNS Lookup
Query common DNS records and reverse DNS
Open tool → Network queryDomain Health Check
Check DNS, SSL, HTTP, RDAP, and scoring for a domain
Open tool → Network querySSL Certificate Check
Check certificate dates, hostname match, chain, and TLS protocol
Open tool → Network queryHTTP Header Check
Check HTTPS redirects, status codes, and security response headers
Open tool → Network queryRDAP Domain Registration
Query registrar, status, dates, name servers, and DNSSEC delegation
Open tool → Network queryDNS Health Check
Check address, NS, MX, CAA, SPF, DMARC, and DNSSEC records
Open tool → LocalIP / CIDR Calculator
Calculate IPv4 and IPv6 boundaries, compare intersections, and aggregate subnets
Open tool → LocalPassword Tool
Generate secure passwords and check strength locally
Open tool → LocalTimestamp Converter
Convert seconds, milliseconds, and common date formats
Open tool → LocalText Diff
Compare added and removed text by line or word
Open tool → LocalJSON Formatter
Validate, format, minify, and sort JSON
Open tool → LocalJSON ↔ YAML
Convert JSON and a single YAML document locally
Open tool → Worker isolatedRegex Tester
Test JavaScript regex, capture groups, and replacements in an isolated Worker
Open tool → LocalUUID Generator
Generate UUID v4/v7 in batches and inspect version, variant, and v7 time
Open tool → LocalQR Code Generator
Generate text, URL, Wi-Fi and vCard contact QR codes locally; export PNG, SVG or VCF
Open tool → LocalBase & Storage Converter
Convert bases 2–36 and SI/IEC storage units
Open tool → LocalBase64 Encoder / Decoder
Convert UTF-8 text, URL-safe Base64, and files locally
Open tool → LocalURL Encoder & Parser
Encode, decode, and inspect URLs and query parameters
Open tool → LocalJWT Parser
Read JWT headers, payloads, and time claims locally
Open tool → LocalHash Calculator
Calculate MD5, SHA-1, SHA-256, and SHA-512 digests for text or files locally
Open tool → LocalImage to Text Art
Convert images locally into six text art styles, with batch processing and TXT export
Open tool → LocalCSV ↔ JSON
Convert tables and JSON locally, preserving quotes, multiline cells, and leading zeros
Open tool → LocalJSONL ↔ JSON Array
Convert JSON Lines and arrays locally while preserving exact numeric text
Open tool → LocalText Cleanup & Statistics
Count words and bytes, trim whitespace, deduplicate, sort, and change case
Open tool → LocalColor Converter & Contrast
Convert HEX, RGB, and HSL, preview text colors, and check WCAG contrast
Open tool → LocalImage Compressor & Converter
Resize images, adjust quality and convert JPEG, PNG and WebP locally
Open tool → LocalCron Expression Preview
Parse five-field Cron and preview future times at a fixed UTC offset
Open tool → Network queryConnection Lab
Measure server-route speed, HTTP latency and jitter, and inspect your request
Open tool Network queryDNS Resolver Comparison
Compare records, TTL and response times from three public resolvers
Open tool Network queryMail DNS Check
Inspect public MX, SPF, DMARC and optional DKIM records
Open tool LocalEmail Header Inspector
Parse email headers, Received hops and authentication claims locally
Open tool LocalCSP Policy Inspector
Inspect CSP directives, resource fallbacks and report-only mode locally
Open tool LocalCookie Attribute Inspector
Inspect Set-Cookie SameSite, Secure, prefixes and expiry attributes locally
Open tool Localrobots.txt Rule Tester
Test crawler groups, Allow/Disallow rules and URL paths locally
Open tool LocalMagnet & Torrent Tools
Prepare torrent search links, parse magnets and read torrent metadata locally
Open tool External linksResource Directory & Multi-site Search
Browse everyday, media, learning, office, AI and publishing services and prepare search links
Open tool LocalMarkdown Workbench
Edit Markdown locally, preview headings and export MD, HTML or plain text
Open tool LocalWorld Clock & Meeting Planner
Compare local dates, times and daylight saving changes, then plan and export a meeting
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Examples and practical guides
Turn JSON errors into readable structure
Paste an API response, configuration file, or log fragment to check its JSON syntax, format it for reading, minify it, or sort object keys. Formatting makes structure easier to inspect and gives you a clean result to copy into an editor, API note, or code review.
Convert CSV and JSON without losing table boundaries
Convert an exported table to JSON or turn an array of objects into CSV for an import, a small data migration, or a field check. Before converting, confirm the header row, delimiter, and destination app’s behavior. Leading zeros, multiline cells, and spreadsheet formulas deserve special attention.
Make a QR code you can test: links, Wi-Fi, and contacts
Encode short text, an HTTP(S) URL, Wi-Fi details, or contact information as a QR code and download PNG or SVG. Contact mode can also export a VCF file. Decide what a scan should do before choosing a mode, and avoid putting sensitive information in a code that will be posted publicly.
Resize and convert images: check dimensions and file size
Read a JPEG, PNG, or WebP in the browser, scale it proportionally by its longest edge, and export WebP, JPEG, or PNG. This is useful for preparing a copy for a website, document, or message. The resulting size depends on the image and format; conversion does not guarantee a smaller file.
Read DNS lookup results for addresses, mail, and reverse DNS
Choose a record type to query the DNS answer currently visible for a domain or IP. A and AAAA cover address records; MX and TXT are common for mail configuration; NS, CNAME, CAA, SOA, and PTR answer other questions. One lookup is not a complete domain health audit.
Calculate CIDR boundaries, address counts, and overlap
Enter an IPv4 or IPv6 address with a prefix to calculate its normalized form, network range, and address count. You can also compare two ranges or aggregate a list. The tool applies a prefix mask to address bits; it does not send probes to the network.