Made for the interruption
Small tools should not become another big commitment.
Tinapps is a workbench for the jobs between the real jobs: the file that is too large, the two drafts that look identical, the color that almost passes, the timestamp nobody wants to decode, or the payment that needs a second look.
- 83
- Focused tools
- 11
- Practical collections
- 0
- Accounts required
- Browser
- Default workspace
Start here
The eight that people arrive looking for by name.
Favicon generator
ICO, SVG, apple-touch-icon, PWA icons and site.webmanifest as a zip — with the mark checked at true 16px.
Design
OG image generator
Open Graph and Twitter card images at 1200×630, previewed as Facebook, X, LinkedIn, Slack and iMessage actually crop and shrink them.
Design
QR code generator
Colours, logo overlay, and the module size in mm against the printable floor.
Image
Image compressor
A quality ladder with the real byte cost at each of six levels.
Image
Code to image
Syntax-highlighted code as a PNG or SVG — themes, window chrome, line numbers — highlighted in your browser instead of on a server.
Design
App icon generator
One square image into an Xcode AppIcon.appiconset with a correct Contents.json, plus Android mipmap densities and adaptive layers.
Design
Contrast checker
WCAG 2.2 ratios on real type, plus the nearest color that passes.
Colors
Image resizer
Aspect lock, social presets, and a warning when a target upscales.
Image
You might also like
Less searched for, more likely to be the thing you needed.
Gradient builder
Drag the stops, click the ramp to add one, compare sRGB against OKLCH.
Colors
Screenshot beautifier
Padding, gradient background, rounded corners, shadow and window chrome at real destination sizes — with the UI text checked after scaling.
Design
JSON formatter
Pretty-print or minify, with the exact line and column of a syntax error.
Text
Timestamp converter
Seconds or milliseconds detected by digit count, then read out every way.
Time
Avatar generator
Deterministic initials and identicon avatars from a name or ID — no API call, batched to a zip, with every avatar's contrast checked.
Design
Regex tester
Matches, capture groups, replacement preview, and snippets per language.
Developer
Text diff checker
Line-by-line comparison with the changed words highlighted inside each edited line.
Text
Loan calculator
Payment, total interest, payoff date, and what an extra payment buys.
Finance
Text
Compare, format, convert, count, encode, and clean text.
Text diff checker
Line-by-line comparison with the changed words highlighted inside each edited line.
JSON formatter
Pretty-print or minify, with the exact line and column of a syntax error.
id,name\n1,Ada
[{"id":1,"name":"Ada"}]
CSV ↔ JSON converter
Both directions, with type inference, NDJSON, and nested keys flattened to columns.
ship it fast
shipItFast · ship_it_fast
Case transformer
Twelve cases computed at once, including a Title Case that keeps punctuation.
Colors
Contrast repair, OKLCH token scales, gradients, and palettes.
Contrast checker
WCAG 2.2 ratios on real type, plus the nearest color that passes.
hsl(217 91% 60%)
#3C83F6 · oklch(0.625 0.187 259.7)
Color converter
HEX, RGB, HSL, Lab, LCH, and OKLCH at once, with OKLCH nudge sliders.
Palette generator
One brand color becomes an even OKLCH ramp with shape controls.
Palette from image
Dominant colors from a photo, with separation, ordering, and coverage.
Design
Favicons, placeholders, and SVG backgrounds designed and downloaded in the page.
Favicon generator
ICO, SVG, apple-touch-icon, PWA icons and site.webmanifest as a zip — with the mark checked at true 16px.
OG image generator
Open Graph and Twitter card images at 1200×630, previewed as Facebook, X, LinkedIn, Slack and iMessage actually crop and shrink them.
GitHub social preview
The 1280×640 card GitHub shows when a repository is linked — language dot, stars, light or dark — checked against the 1MB upload limit.
Code to image
Syntax-highlighted code as a PNG or SVG — themes, window chrome, line numbers — highlighted in your browser instead of on a server.
Merge, split, rotate, and convert PDFs without uploading them.
report.pdf + form.pdf · 9 pages
1 file · 11 bookmarks · 2 fields flattened
Merge PDF
Combine PDFs in your browser and rebuild the bookmark outline the other mergers throw away — with a report of what else the merge costs.
report.pdf · 7 pages · at bookmarks
4 files · 02-findings.pdf · 2.9 KB
Split PDF
Cut at the bookmarks, by page range, every N pages, or under a file size — with every part built and weighed before you download it.
report.pdf · pages 2-4 clicked
3 pages · 3 bookmarks · remainder too
Extract PDF pages
Click the pages you want out of a document — with their bookmarks renumbered, and the pages you left behind as a second file if you want them.
scanned-batch.pdf · 5 pages
3 misoriented found · 0 after straighten
Rotate PDF
Turn whole documents or single pages permanently — and find the pages that need it from the direction their text runs, not their shape.
Video
Cut audio and video with the browser's own codecs — nothing uploaded.
8 s clip · 0:02 → 0:04
31 KB · copied, not re-encoded
MP3 cutter
Trim audio on a waveform, snap the cut to the nearest silence so it never lands mid-word, and keep the original bytes where the format allows.
sample-clip.mp4 · 10 s
31 KB opus copied · 23% of the file
Extract audio from video
Take the sound out of a video as a copy of the original track rather than a re-encode — and see what share of the file it was.
10 s clip · 0:03 → 0:07
copy 71 KB · frame-exact 131 KB
Trim video
Cut a clip with the frames copied rather than re-encoded — and see how far your in-point sits from the keyframe that decides whether that is possible.
135 KB clip · opus removed
102 KB · 0 frames re-encoded
Mute video
Take the sound off a clip without touching the picture — and choose between dropping the audio track and keeping a silent one, which some uploads require.
Image
Resize, compress, convert, crop, and strip metadata locally.
logo.png · 2.0 KB
data:image/png;base64,… · +33%
Base64 converter
Data URIs in both directions, with an inline-or-don't call on the result.
Image resizer
Aspect lock, social presets, and a warning when a target upscales.
Image compressor
A quality ladder with the real byte cost at each of six levels.
screenshot.png
3 codecs encoded · smallest wins
Format converter
PNG, JPEG, and WebP encoded at once so you can pick by size, not by habit.
Numbers
Percentages, exact big-integer maths, and dataset summaries.
Percentage calculator
Every direction of the question: of, change, reverse, and compounding.
Average & median
Mean, median, quartiles, deviation, and the values flagged as outliers.
255
0xFF · 0b1111 1111 · 0o377
Base converter
Bases 2–36 on BigInt, so conversion stays exact well past 2⁵³.
0.375
3/8 · 37.5%
Fraction converter
Decimals to simplified fractions and back, repeating digits included.
Finance
Loans, mortgages, compound growth, and payoff strategies.
Budget tracker
Income against categories, with the savings rate and the pressure points.
Compound interest
Recurring contributions, contribution timing, and a year-by-year schedule.
3 balances · +$300/mo
debt-free dates · interest gap
Debt payoff planner
Snowball against avalanche on your actual balances and APRs.
Investment return
ROI and annualised return after dividends, fees, and tax, plus breakeven.
Developer
Cron schedules, regex, JWT inspection, and identifiers.
0 9 * * 1-5
Mon–Fri at 09:00 · next 5 runs
Cron builder
POSIX and AWS syntax, every field explained, next runs in your zone.
Regex tester
Matches, capture groups, replacement preview, and snippets per language.
JWT decoder
Claims and expiry decoded locally; HMAC signatures verified in the page.
UUID v7 × 100
time-sortable · JSON or NDJSON
ID generator
UUID v4/v7, ULID, NanoID, CUID in bulk, with embedded timestamps decoded.
Time
Timestamps, time-zone overlap, and business-day counting.
Timestamp converter
Seconds or milliseconds detected by digit count, then read out every way.
09:00 New York ↔ London
overlap 09:00–12:00 local
Time zone converter
A world clock plus a rail showing where working hours actually overlap.
Sep 1 → Dec 31, 2026
121 days · 84 business days
Business days calculator
Working days between two dates, with the US or UK holidays it skipped named.
Jan 1 → Dec 31, 2026
364 days · 365 inclusive
Days between dates
Every calendar day counted, inclusive and exclusive, for anything accruing daily.
Learn
Short practice for typing, mental maths, maps, and code.
Typing trainer
A timed test over prose, punctuation, numbers, or code that names the keys costing you time.
6 skills · 10 levels
accuracy and pace per skill
Mental math gym
Addition, subtraction, multiplication, division, squares, and percentages, with a method behind every answer.
Map memory
97 countries, their capitals, and their flags on an interactive world map, filtered by region.
45 JavaScript snippets
the trace, verified in a worker
Code reading gym
45 snippets: predict the output, then step through the execution trace one value at a time.