RHypernova Blog

Guides for every module in the platform.

Deep dives into every RHypernova module — PDF editor, jobs portal, text tools, vulnerability scanning, JWT security, and JSON/XML tools — so you know exactly what each feature does and how to use it.

123Feature guides
6Product modules
6Pillar guides
PDF
Featured guide

PDF Editor: Edit, Secure, Convert & Export Without Desktop Software

A complete guide to RHypernova PDF Editor — visual editing, merge & split, stamp & sign, protect/unlock/redact, repair, strip metadata, convert images/text/HTML, and 32 free PDF tools in your browser.

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PDFDocuments
8 min read

PDF Editor: Edit, Secure, Convert & Export Without Desktop Software

A complete guide to RHypernova PDF Editor — visual editing, merge & split, stamp & sign, protect/unlock/redact, repair, strip metadata, convert images/text/HTML, and 32 free PDF tools in your browser.

  • Visual PDF workspace
  • 32 PDF tools
  • Secure & convert suite
  • Enterprise PDF API
PDFEditMergeSignProtectConvertRedactRead guide
JOBCareer
7 min read

Jobs Portal: Search Roles, Apply Online & Track Applications

Find job openings, apply with your profile, and track application status in one career workspace.

  • Job search
  • One-click apply
  • Application tracker
  • Career workspace
JobsApplyCareersTrackerRead guide
TXTDeveloper
6 min read

Text Tools Lab: Diff, Case Convert, Word Counter, Regex & More

Free browser text utilities — diff and compare, case converter, word/character counters, sort lines, slug generator, and regex tester.

  • Text diff & compare
  • Case & slug tools
  • Counters
  • Regex lab
Text ToolsDiffRegexWord CounterRead guide
SECSecurity
9 min read

Vulnerability Lab: Web AppSec Scans, Attack Paths & Scorecards

Scan pages, APIs, frontend/backend/SQL surfaces, find code weaknesses, map attack paths, plan remediation, and build security scorecards.

  • Scoped URL scans
  • API & SQL scanners
  • Attack paths
  • Security scorecard
VulnerabilityAppSecOWASPSecurity ScanRead guide
JWTDeveloper
8 min read

JWT Security Lab: Encode, Decode, Hash & Developer Crypto Tools

JWT encoder/decoder/validator, bcrypt and SHA hashes, Base64, UUID, cron, timestamps, and code formatters — each with an independent API.

  • JWT toolkit
  • bcrypt & SHA
  • Encoding helpers
  • API-ready tools
JWTHashingCryptoDeveloper ToolsRead guide
{ }Developer
6 min read

JSON / XML Tools: Format, Validate & Convert Structured Data

Pretty-print and validate JSON/XML, minify JSON, and convert JSON↔XML, YAML↔JSON, and CSV↔JSON with independent APIs.

  • JSON formatter
  • XML validator
  • Data converters
  • API endpoints
JSONXMLYAMLCSVRead guide
Complete feature library

Every tool, explained — 123+ step-by-step guides.

Pick any RHypernova feature to learn exactly what it does and how to use it.

PDF

PDF Editor

Edit, organize, convert, and secure PDF documents online.

32 guides
Edit PDFEdit text, images, and layout in a PDF directly in your browser.Read guide →Crop PDFCrop margins or a selected region from PDF pages.Read guide →Resize PDFChange PDF page dimensions for print or digital delivery.Read guide →Rotate PDFRotate PDF pages by 90, 180, or 270 degrees.Read guide →Merge PDFCombine multiple PDF files into one document.Read guide →Split PDFSplit a PDF into multiple files by page ranges.Read guide →Add Images to PDFPlace images, logos, or photos onto PDF pages.Read guide →Annotate & Highlight PDFAdd notes, highlights, and markup to a PDF.Read guide →Add Watermark to PDFApply a text or diagonal watermark across PDF pages.Read guide →Add Header & Footer to PDFAdd running headers or footers across page ranges.Read guide →Delete PDF PagesRemove one or more pages from a PDF.Read guide →Extract PDF PagesPull selected pages out into a new PDF.Read guide →Reorder PDF PagesRearrange the page order of a PDF.Read guide →Duplicate PDF PagesCopy pages within a PDF.Read guide →Insert Blank PDF PageInsert blank pages at any position in a PDF.Read guide →Add Page Numbers to PDFAdd automatic page numbering to a PDF.Read guide →Flatten PDFFlatten forms and annotations into the page.Read guide →Stamp PDFAdd stamps like Approved, Draft, or Confidential.Read guide →Convert PDF to WordConvert a PDF into an editable Word document.Read guide →Convert PDF to TextExtract plain text from a PDF.Read guide →Convert PDF to ImagesExport PDF pages as image files.Read guide →Convert Images to PDFCombine images into a single PDF.Read guide →Convert Text to PDFTurn plain text into a formatted PDF.Read guide →Convert PDF to HTMLConvert a PDF into web-ready HTML.Read guide →Compress PDFReduce PDF file size while keeping quality.Read guide →Protect PDF with PasswordEncrypt and password-protect a PDF.Read guide →Unlock PDFRemove a password from a PDF you own.Read guide →Redact PDFPermanently black out sensitive content in a PDF.Read guide →Repair PDFRecover and fix damaged or corrupted PDF files.Read guide →Sign PDFAdd an electronic signature to a PDF.Read guide →Remove PDF MetadataStrip hidden metadata from a PDF.Read guide →Extract Images from PDFSave all embedded images from a PDF.Read guide →
JOB

Jobs Portal

Search roles, apply with your profile, and track applications.

2 guides
Job SearchSearch and filter job openings that fit your skills.Read guide →Job Application TrackerTrack application status and follow-ups in one place.Read guide →
TXT

Text Tools Lab

Diff, compare, convert case, count words, sort lines, generate slugs, and test regex online.

12 guides
Text Diff CheckerLine-level unified/side-by-side diff with change stats and optional ignore-whitespace.Read guide →Text CompareSimilarity score, edit distance, and longest common subsequence between two texts.Read guide →Case ConverterConvert text between camelCase, snake_case, kebab-case, Title Case, and more.Read guide →Word CounterCount words, sentences, paragraphs, reading time, and top keyword frequencies.Read guide →Character CounterCharacter, byte, Unicode, and whitespace analytics with encoding estimates.Read guide →Remove Duplicate LinesDeduplicate lines with keep-first/keep-last modes and case-insensitive matching.Read guide →Sort LinesSort lines alphabetically, numerically, by length, or randomly with options.Read guide →Reverse TextReverse characters, words, or lines — including Unicode-aware grapheme reversal.Read guide →Lorem Ipsum GeneratorGenerate classic or modern placeholder copy by words, sentences, or paragraphs.Read guide →Slug GeneratorCreate SEO-friendly URL slugs with transliteration, max length, and separator control.Read guide →Regex TesterTest Python regex with flags, match groups, replace preview, and timing.Read guide →Regex GeneratorBuild common regex patterns from intent presets with explanations and examples.Read guide →
SEC

Vulnerability Lab

Scan websites and apps for weaknesses, attack paths, remediation plans, and security scorecards.

12 guides
2-Page Quick ScanLive multi-surface scan of up to 2 URLs — HTML/CSS/JS/API/AI entry ways, weakness points, and fixes.Read guide →5-Page Standard ScanDeeper live scan (up to 5 URLs) mapping forms, scripts, APIs, headers, and cross-page attack paths.Read guide →Full Application ScanEntire-application inventory scan: routes, APIs, frontend, backend, SQL, secrets, and attack surface.Read guide →API Security ScanScan OpenAPI/REST endpoints for auth gaps, IDOR risks, injection points, and API hacking paths.Read guide →Frontend Security ScanAnalyze HTML/JS/SPA markup for XSS sinks, insecure storage, mixed content, and client-side threats.Read guide →Backend Security ScanReview backend code/config for auth flaws, SSRF, deserialization, secrets, and privilege risks.Read guide →SQL Security ScanDetect SQL injection patterns, weak queries, missing parameterization, and database hardening gaps.Read guide →Code Weakness ScannerSAST-style weakness detection (CWE-oriented) with severity, evidence, and secure coding fixes.Read guide →Threat Surface AnalyzerMap threats across users, APIs, data stores, and third parties — STRIDE-inspired SaaS threat model.Read guide →Attack Path FinderFrom each entry point, show how an attacker could move — and the exact fix for each hop.Read guide →Remediation AdvisorTurn scan findings into a prioritized fix backlog with owners, effort, and verification steps.Read guide →Security ScorecardUnified SaaS scorecard across security, vulnerability, weakness, threats, and hacking points.Read guide →
JWT

JWT Security Lab

Encode, decode, and validate JWTs plus hashing, encoding, UUID, cron, timestamps, and code formatters.

54 guides
JWT EncoderEncode and sign JWTs (HS256/HS384/HS512/RS256) with custom claims.Read guide →JWT DecoderDecode JWT header and payload without requiring a secret.Read guide →JWT ValidatorValidate signature, expiry, nbf, iss, aud, and algorithm.Read guide →JWT GeneratorGenerate production-ready JWTs with TTL, roles, and standard claims.Read guide →Base64 Encode/DecodeEncode or decode Base64 / Base64URL with UTF-8 safety.Read guide →URL Encode/DecodePercent-encode or decode URLs and query strings.Read guide →HTML Encode/DecodeEscape or unescape HTML entities safely.Read guide →MD5 GeneratorGenerate MD5 digests (hex / base64).Read guide →SHA-1 GeneratorGenerate SHA-1 digests.Read guide →SHA-256 GeneratorGenerate SHA-256 digests.Read guide →SHA-512 GeneratorGenerate SHA-512 digests.Read guide →BCrypt Password GeneratorHash passwords with bcrypt (configurable cost).Read guide →BCrypt Verify PasswordVerify a plaintext password against a bcrypt hash.Read guide →HMAC GeneratorCreate HMAC signatures (SHA-256/512).Read guide →UUID/GUID GeneratorGenerate UUID v1/v4 (and nil) in multiple formats.Read guide →Random String GeneratorCryptographically strong random strings.Read guide →Password GeneratorGenerate strong passwords with entropy estimate.Read guide →JSON FormatterPretty-print JSON with configurable indent.Read guide →JSON ValidatorValidate JSON and report precise parse errors.Read guide →JSON MinifierMinify JSON by removing whitespace.Read guide →JSON to XMLConvert JSON documents to XML.Read guide →XML to JSONConvert XML documents to JSON.Read guide →XML FormatterPretty-print XML.Read guide →XML ValidatorValidate XML well-formedness.Read guide →YAML to JSONConvert YAML to JSON.Read guide →JSON to YAMLConvert JSON to YAML.Read guide →CSV to JSONConvert CSV tables to JSON arrays.Read guide →JSON to CSVConvert JSON arrays to CSV.Read guide →Image to Base64Convert uploaded images to Base64 data URIs.Read guide →Base64 to ImageDecode Base64 into an image preview payload.Read guide →Binary to DecimalConvert binary numbers to decimal.Read guide →Decimal to BinaryConvert decimal numbers to binary.Read guide →Decimal to HexConvert decimal numbers to hexadecimal.Read guide →Hex to DecimalConvert hexadecimal to decimal.Read guide →ASCII ConverterConvert text ↔ ASCII code points.Read guide →ASCII ↔ HEXConvert ASCII text ↔ hexadecimal bytes.Read guide →ASCII ↔ BinaryConvert ASCII text ↔ binary bytes.Read guide →Unix Timestamp ConverterConvert between Unix timestamps and ISO dates.Read guide →Epoch ConverterRich epoch conversion with timezone offsets.Read guide →Cron Expression GeneratorBuild cron expressions from human-friendly fields.Read guide →Cron Expression ParserExplain cron expressions in plain English.Read guide →Unix Time to DateMap Unix time to local/UTC formatted dates.Read guide →Date Difference CalculatorCompute precise differences between two dates.Read guide →Color PickerInspect colors across HEX, RGB, HSL with contrast hints.Read guide →HEX ↔ RGB ConverterConvert between HEX and RGB(A).Read guide →HEX ↔ HSL ConverterConvert between HEX and HSL(A).Read guide →CSS MinifierMinify CSS safely.Read guide →CSS BeautifierBeautify CSS with consistent indentation.Read guide →JavaScript MinifierLightweight JS minifier for snippets.Read guide →JavaScript BeautifierBeautify JavaScript snippets.Read guide →HTML MinifierMinify HTML markup.Read guide →HTML BeautifierBeautify HTML markup.Read guide →SQL FormatterFormat SQL for readability.Read guide →SQL BeautifierBeautify SQL with keyword casing.Read guide →
{ }

JSON / XML Tools

Format, validate, minify, and convert JSON, XML, YAML, and CSV with independent APIs.

11 guides
JSON FormatterPretty-print JSON with indent, key sorting, and trailing-comma repair hints.Read guide →JSON ValidatorValidate JSON with precise line/column diagnostics and structure stats.Read guide →JSON MinifierMinify JSON and report bytes saved.Read guide →JSON to XMLConvert JSON objects/arrays into well-formed XML.Read guide →XML to JSONConvert XML documents into JSON with attribute preservation.Read guide →XML FormatterPretty-print XML with configurable indentation.Read guide →XML ValidatorValidate XML well-formedness and report root/element counts.Read guide →YAML to JSONConvert YAML (including multi-doc) into JSON.Read guide →JSON to YAMLConvert JSON into clean YAML.Read guide →CSV to JSONConvert CSV tables into JSON arrays of objects.Read guide →JSON to CSVConvert JSON arrays of objects into CSV.Read guide →