Tools
Utilities that run in your browser. Format JSON and CSV, hash advertising audiences, build UTM URLs, write SPF and nginx snippets, and convert CIDR, cron, timestamps, and SQL — without uploading a file.
SHA-256 email lists for Google Customer Match and Meta Custom Audiences.
MetaSHA-256 emails the way Meta Custom Audiences expect.
Google AdsSHA-256 emails for Google Ads Customer Match.
TikTokSHA-256 emails for TikTok Custom Audiences.
LinkedInSHA-256 emails for LinkedIn Matched Audiences.
SHA-256Generic SHA-256 hasher for email lists.
NormalizeLowercase, trim, and dedupe emails without hashing.
PhoneSHA-256 hashed phone lists for ads audiences.
PhoneClean phone lists before hashing or CSV export.
Meta CSVFormat a CSV for Meta Custom Audiences.
Google CSVFormat a CSV for Google Customer Match.
MailchimpMD5 of lowercase email for the Mailchimp API.
Meta PixelPurchase and other standard events as snippet plus JSON.
Google Adssend_to, value, and currency for gtag conversions.
TikTok PixelCompletePayment and other events as snippet plus JSON.
RSA key pair, DNS TXT record, and PEM files.
SPFGenerate an SPF TXT record.
SPFExplain an existing SPF record.
DMARCGenerate a DMARC TXT record.
DMARCExplain an existing DMARC record.
DKIMFormat a long DKIM public-key TXT record.
MailtoEncode a mailto link for HTML or docs.
Build campaign URLs with UTM parameters.
UTMRead utm_source, medium, campaign, term, and content.
Google AdsTag landing pages for Google Ads.
Meta AdsTag landing pages for Facebook and Instagram ads.
EncodeencodeURIComponent for query values and segments.
DecodeTurn % sequences back into characters.
ParseSee protocol, host, path, and query parameters.
Turn UTF-8 text into a Base64 string.
Base64Decode standard Base64 to text.
SHA-256Hex digest of UTF-8 text, or each line.
SHA-1Hex SHA-1 of UTF-8 text.
SHA-512Hex SHA-512 of UTF-8 text.
UUIDRandom UUID v4, optional count and formatting.
JWTRead claims. Does not verify the signature.
GravatarMD5 email hash and gravatar.com/avatar URL.
Pretty-print, minify, validate, and sort keys.
JSONFlatten nested JSON or NDJSON into columns.
JSONRepair trailing commas, comments, and unquoted keys.
MinifyStrip whitespace from JSON for APIs, logs, and env vars.
ValidateCheck that paste is strict JSON without changing it.
SortAlphabetize object keys, including nested objects.
KeysUnique dotted paths, or values at one path.
CSV→JSONEach CSV row becomes a JSON object.
JSON→TSVSame flatten as JSON to CSV, tab-separated.
TSV→JSONTab-separated table to JSON objects.
NDJSONNewline-delimited JSON to flattened CSV.
HTML head tags for title, description, and robots.
Open Graphog:title, description, url, image, and type.
Twittertwitter:card, title, description, and image.
JSON-LDschema.org JSON for a script ld+json tag.
robots.txtAllow/disallow paths and a sitemap line.
SlugLowercase dashed paths from page titles.
Network, broadcast, mask, and host counts for IPv4.
SubnetCarve a CIDR into equal IPv4 subnets.
WildcardInverse mask for Cisco ACLs and OSPF.
chmodOctal, symbolic, and a chmod command line.
CronFive-field crontab with presets and a summary.
CronTurn */15 9-17 * * 1-5 into a sentence.
nginxlisten, server_name, root, and try_files.
ApacheVirtualHost, ServerName, DocumentRoot.
API dumps, tokens, mail keys, and address lists should not go to a random upload form. Each tool here runs in the tab you already have open. Convert nested payloads with JSON to CSV, hash Meta or Google audiences with the email hasher, tag landing pages with the UTM builder, or publish mail DNS with the SPF generator.