Benchline

AES-256-GCM encryption with PBKDF2-SHA256 key derivation. Encrypt returns a base64 bundle (salt, IV, ciphertext); decrypt reverses it.

Parse a HAR (HTTP Archive) capture and summarize it: request counts, status distribution, slowest and largest requests, top hosts, and per-request timings.

Encode UTF-8 text as Base64, or decode Base64 and data URIs. URL-safe output uses - and _ and omits padding. Decode reports the sniffed media type and whether the bytes are UTF-8 text.

Build a Content-Security-Policy from directives, or lint an existing policy. Returns the header line, a Next.js headers() snippet, and warnings for unsafe sources.

Build schema.org JSON-LD for one type, plus a script tag and a list of missing fields. Use this when you already know the fields. It does not fetch a page.

Generate a production Dockerfile, dockerignore, compose file, and next.config snippet for a Next.js app. Defaults match a pnpm standalone image.

Render one of the Open Graph templates as a PNG and a Next.js opengraph-image.tsx file. Pass a template id from list_og_templates, the fields that template uses, colors, a size, and optional base64 images.

Return the network, broadcast, host range, and host count for an IPv4 or IPv6 CIDR. Optionally test whether an address is inside it, split it, or merge it with other CIDRs.

Calculate a reducing-balance loan installment and its amortization schedule. Money is rounded half up to cents. An optional extra monthly payment reduces principal.

Calculate percent of a value, what percent one number is of another, percent change, the reverse, an increase or decrease, and margin versus markup.

Evaluate integer expressions with C-like precedence (hex/octal/binary literals, bitwise ops, shifts) and report base conversions plus signed/unsigned interpretations.

Fetch a public URL, follow redirects, and grade HSTS, Content-Security-Policy, framing, nosniff, and Referrer-Policy. Private addresses are refused. The body is not stored.

Fetch a public robots.txt and report whether the wildcard group blocks the site and whether Sitemap lines are absolute. Use this when you have a URL, not a pasted file.

Connect to a public host on port 443 and report certificate expiry, subject alternative names, protocol, and chain. Private addresses are refused. The handshake times out after 8 seconds.

Re-encode an image at a quality from 1 to 100, optionally capping the longest edge. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the image as base64.

Recompress embedded images in a PDF. Presets are light, medium, and strong. Send base64 or a public URL. Private addresses are refused. An optional target size tries harder. Returns the PDF and the sizes before and after.

Convert text to camelCase, snake_case, kebab-case, CONSTANT_CASE, and AP or Chicago title case. Returns every style unless one is requested.

Convert HEX, RGB, HSL, OKLCH, or CMYK into every format, name the nearest Tailwind token, and report the WCAG 2 contrast ratio against a background.

Convert CSV to JSON or JSON to CSV. Supports comma, tab, semicolon, and pipe delimiters, an optional header, type inference, and dotted flattening. Inferred numbers that do not fit in a JavaScript number keep their digits.

Parse a curl command and generate equivalent JavaScript fetch, Python requests, Go, PHP, or Rust code.

Convert money between ISO 4217 currencies using live exchange rates from the Frankfurter API, fetched through the SSRF-safe outbound guard. Supports historical dates.

Convert between JSON, YAML, TOML, and XML. Auto-detects the source. Numbers that do not fit in a JavaScript number keep their digits. Errors include a line and column. TOML refuses null and a non-table root.

Convert an image to JPEG, PNG, WebP, or AVIF. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the image as base64. HEIC is not decoded here.

Infer types from a JSON document and generate TypeScript interfaces, Zod schemas, Python Pydantic models or dataclasses, and Go structs.

Convert GitHub-flavored Markdown to HTML, or HTML to Markdown. to is html or markdown. sanitize strips scripts from the text output. The conversion does not fetch a URL.

Convert length, mass, volume, temperature, area, speed, time, and data size. Decimal bytes (kB, MB) and binary bytes (KiB, MiB) are separate categories.

Convert epoch seconds, milliseconds, microseconds, or nanoseconds to ISO-8601 and RFC 2822 in an IANA time zone, or convert a calendar time back to epoch.

Count words, code points, graphemes, sentences, and paragraphs, and compare the length with SEO and social limits.

Count tokens with the o200k or cl100k encoder and price the count against the published model table. Claude and Gemini rows are estimates, not those vendors' tokenizers.

Crop an image to a pixel box or a 0 to 1 ratio box. circle cuts a round mask. format is png, jpeg, or webp. Send base64 or a public URL. Private addresses are refused and the decoded file is capped at 10 MB. Returns the image as base64.

Count calendar days, elapsed time, and business days between two dates. Business days skip weekends and any YYYY-MM-DD holidays you list.

Decode a signed JSON Web Token into its header, payload, and registered claims. Dates are absolute ISO timestamps. The signature is not checked.

Compare two texts by line, word, or character, or compare JSON so object key order does not matter. Returns an inline diff, side-by-side rows for line and JSON modes, and a unified patch.

Send a GraphQL query with optional variables and headers to a public http or https endpoint on port 80 or 443 and return the response data or errors. Local, private, and internal addresses are refused.

Convert an octal or symbolic file mode into octal, symbolic notation, and a chmod command, including setuid, setgid, and the sticky bit.

Turn a cron expression into English, the next UTC run times, and snippets for crontab, GitHub Actions, Vercel, Kubernetes, and node-cron.

Read the selectable text layer of a PDF. Returns per-page text, markdown-style headings, and an o200k token count. Does not OCR scans. Send base64 or a public URL. Private addresses are refused.

Fetch a public HTML page and return the article as Markdown, plus a title, excerpt, and o200k token count. Private and local addresses are refused. The response is capped at 800 KB.

Fill an interactive PDF form's text fields, checkboxes, dropdowns, and radios by field name, with an option to flatten the result. Pass inspectOnly to list the fields first.

Pretty-print or minify JSON. A number that does not fit in a JavaScript number keeps the digits you sent. Returns the formatted text when it is valid, or the line and column of each syntax error.

Format SQL for PostgreSQL, MySQL, BigQuery, Snowflake, and other dialects. Choose keyword case and an indent of 2 or 4 spaces.