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Practical guides for text, code, image, URL, security, and randomizer workflows. Start with a topic or jump into the latest guide.

Glass side-by-side panels showing removed red lines and added green lines on a dark gradient background

Featured guide

Diff checker: compare two texts, ignore whitespace, and understand +/− output

Compare two texts with a diff checker. Learn how to read added and removed lines, ignore whitespace, and review edits safely.

Feb 28, 20263 min readDeveloper & Data

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Topics

Developer & Data

Practical guides for formatting, debugging, encoding, and moving structured data.

Security & Privacy

Safe handling for passwords, tokens, hashes, and privacy-sensitive utility work.

Text & Social

Readable text styling, writing limits, Unicode effects, and social copy helpers.

Image & Creative

Image cleanup, OCR, ASCII art, and creative asset workflows.

URLs & Marketing

Cleaner links, tracking parameters, slugs, and campaign-friendly utilities.

Randomizers

Fair picks, random numbers, giveaways, and repeatable selection workflows.

Latest guides

Browse sitemap

Glass code card with encoded glyphs converting into a clear image thumbnail card

Feb 24, 2026

Developer & Data

Base64 to image: decode data URLs, fix broken <img> tags, and download PNG/JPG

Turn a Base64 string into an image file. Learn raw Base64 vs data URLs, common decoding errors, and safe browser-based conversion.

3 min read

Glass card with UUID-style segmented blocks and highlighted version and variant sections on a dark gradient

Feb 22, 2026

Developer & Data

UUID generator: what UUID v4 is, when to use it, and common mistakes

Generate UUID v4 identifiers for databases, APIs, and correlation IDs. Learn what makes UUIDs unique, when they are a good fit, and what not to use them for.

3 min read

Glass table grid turning into formatted JSON brackets on a blue gradient

Feb 20, 2026

Developer & Data

CSV to JSON: convert messy spreadsheets to clean JSON (headers, quotes, and commas)

Convert CSV to a JSON array of objects. Learn how headers, delimiters, and quoted fields work, plus fixes for messy spreadsheet exports.

3 min read

Glass timestamp glyphs transforming into calendar and clock cards with UTC and local time indicators

Feb 18, 2026

Developer & Data

Epoch converter: turn Unix timestamps into readable dates (seconds vs milliseconds)

Convert epoch time to readable dates and back to Unix timestamps. Learn the 10-digit vs 13-digit rule and debug time fields fast.

3 min read

Side-by-side comparison of a blurry ASCII art output versus a clean, high-contrast version on a dark terminal background

Feb 14, 2026

Image & Creative

How to Make ASCII Art That Actually Looks Good: Settings, Characters, and Pro Tips

Make cleaner ASCII art from images with the right brightness, contrast, edge detection, width, and character set settings.

9 min read

Glass three-part token split into segments with decoded JSON-style cards on a deep blue gradient

Feb 14, 2026

Security & Privacy

JWT decoder: read header and payload safely (and know what is not verified)

Decode a JWT to inspect claims, expiration, issuer, and audience. Learn what decoding proves, common errors, and privacy-safe token checks.

3 min read

Glass cutout silhouette on a checkerboard transparency grid with clean edges on a teal-blue gradient

Feb 12, 2026

Image & Creative

Remove background from an image: clean cutouts, transparent PNGs, and common mistakes

Remove image backgrounds without jagged edges or halos. Learn when it works, how to get clean cutouts, and which export format to use.

4 min read

Glass photo card with highlighted text lines turning into a clean text document on a dark blue gradient

Feb 10, 2026

Image & Creative

Image to text: copy text from screenshots with OCR (and fix common mistakes)

Extract copyable text from screenshots, scans, and photos. Learn how OCR works, how to improve accuracy, and how to keep it private.

4 min read

Text with strikethrough effect showing crossed out words on a dark gradient background

Jan 4, 2026

Text & Social

How to Cross Out Text Online: The Complete Guide to Strikethrough

Learn how to cross out text for Discord, Instagram, Twitter, and more. Our guide covers strikethrough generators, Unicode methods, and platform-specific tips.

4 min read

Cryptographic hash visualization showing text transforming into hexadecimal MD5 output

Jan 4, 2026

Security & Privacy

MD5 Hash: What It Is, How to Use It, and When Not To

Learn what MD5 hashes are, how to generate them, when to use checksums for file verification, and why MD5 isn't safe for passwords.

4 min read

Jan 4, 2026

Randomizers

Random Picker for Giveaways: How to Fairly Select Winners

Learn how to pick random winners for giveaways, raffles, and contests. Our guide covers fair randomization methods, best practices, and free tools.

4 min read

Various styled text examples including bold, italic, and decorative Unicode fonts on a gradient background

Jan 4, 2026

Text & Social

Text Styling for Social Media: Bold, Italic, Underline & More (No Apps Needed)

Learn how to style text for Instagram, Twitter, Discord, and TikTok using Unicode. Create bold, italic, underline, and fancy fonts without any apps.

5 min read

Dashboard showing UTM campaign tracking data in Google Analytics style visualization

Jan 4, 2026

URLs & Marketing

UTM Parameters Explained: The Complete Guide to Campaign Tracking

Learn what UTM parameters are, how to use them for Google Analytics tracking, and best practices for creating UTM links that help measure marketing ROI.

4 min read

Glitchy corrupted zalgo text effect on a dark horror-style background

Jan 4, 2026

Text & Social

Zalgo Text Generator: How to Make Glitch Text and Cursed Text

Learn how to create zalgo text, glitch text, and cursed text for Discord, memes, and social media. Understand how the effect works and best practices.

4 min read

Glassmorphic cards showing Base64 blocks decoding into readable text on a cyan-purple gradient

Dec 21, 2025

Developer & Data

Base64 decode errors: padding, URL-safe Base64, and readable output

If a Base64 string won't decode, the cause is usually padding, Base64URL characters, or a pasted prefix. This guide shows how to fix each fast with Textavia.

4 min read

Neon glass UI showing plain text transforming into bold Unicode characters on a dark cyan-purple gradient

Dec 21, 2025

Text & Social

Bold text generator: how Unicode fonts work (and why some apps break)

Bold Unicode text is not formatting; it's different characters. Learn how bold text generators work, where they are useful, and when to avoid them.

3 min read

Glass UI card turning a messy headline into a clean kebab-case slug on a teal-purple gradient

Dec 21, 2025

URLs & Marketing

Slugify a URL: create clean slugs that stay stable (and why stability matters)

A URL slug is the readable part of a link. Learn how to slugify titles safely, avoid accidental changes, and generate stable slugs with Textavia.

4 min read

Glass cards showing percent-encoded characters transforming into a clean URL on a blue-purple gradient

Dec 21, 2025

URLs & Marketing

URL encoding: decode %20, fix broken query strings, and avoid double-encoding

If you see %20, %2F, or %3D in a link, you're looking at URL encoding. Learn when to encode, when to decode, and how to fix common mistakes fast with Textavia.

4 min read

Neon glass UI with JSON brackets and error highlights

Dec 14, 2025

Developer & Data

Fix JSON parse errors: trailing commas, quotes, and other gotchas

Most JSON errors come from a few predictable mistakes. Here is how to spot them, fix them, and validate the result with Textavia's JSON Formatter.

4 min read

Glass UI with dice, range sliders, and grid of generated numbers over a city glow

Dec 14, 2025

Randomizers

Random number generator tips: inclusive ranges, repeats, and fair picks

Need a quick draw for a game, giveaway, or test? Learn how range settings work, how to avoid repeats, and how to sanity-check a result.

3 min read

Glassmorphic password generator card with sliders and toggles on a cyan-purple gradient

Dec 14, 2025

Security & Privacy

Strong password length: how long to make it, and which options matter

Length and randomness beat complicated rules. Use this guide to pick a password length that fits your risk, then generate it locally with Textavia.

4 min read

Glass panels displaying word and character counts on a teal-blue gradient

Dec 14, 2025

Text & Social

Word count rules: what counts as a word, character, sentence, and paragraph

Learn what counts as a word, character, sentence, paragraph, and line, plus how to use a fast counter while you write.

4 min read