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Browse tools | Elysia Tools

All categories Math, Date & Finance Images, Audio & Video Design & Color Text & Writing Conversion & Encoding Developer & Web Data & Tables Documents & PDF Security & Validation Charts & Visualization

163 tools in Developer & Web

HTML Entity Encoder/Decoder

Development

Encode and decode HTML entities

html-entity-encoder

Integer to IPv6

Network

Convert integers (128-bit) to IPv6 addresses. Supports batch conversion.

integer-to-ipv6

IPv4 to IPv6

Network

Convert IPv4 addresses to IPv6 addresses. Supports IPv4-mapped and IPv4-compatible formats.

IPv6 to Integer

Network

Convert IPv6 addresses to integers (128-bit). Supports batch conversion.

ipv6-to-integer

JavaScript Minifier

Development

Compress JavaScript code

javascript-minifier

HTTP Headers Analyzer

Development

Analyze HTTP headers, security configurations, and response information

http-headers-analyzer

IP Info

Network

Get real information about IP addresses including location and ISP details using geolocation database

Integer to IPv4

Network

Convert integers to IPv4 addresses. Supports batch conversion of multiple integers.

integer-to-ipv4

IPv4 to Integer

Network

Convert IPv4 addresses to integers. Supports batch conversion of multiple addresses.

ipv4-to-integer

Formula / Chart Heavy PDF Analyzer

Developer Tools

Compare local and hybrid OpenDataLoader extraction to identify PDF pages where formulas, charts, or dense visuals may need AI-assisted parsing

formula-chart-heavy-pdf-analyzer

DNS Zone File Record Builder

Network

Build RFC 1035 DNS zone files (SOA + NS/A/AAAA/CNAME/MX/TXT/SRV/CAA/TLSA/NAPTR/DS) with per-record validation and a readable summary.

dns-zone-file-record-builder

Email HTML Linter

Development

Check email HTML templates for cross-client compatibility: unsupported CSS, non-inline styles, Outlook traps, table layout issues, and accessibility gaps.

email-html-linter