Public updates are written in plain language. Internal proof notes stay out of this page.
Cloudflare's Stable Diffusion joins the picker — fast & cheap
0.23.0 · 2026-05-28 · minor
The Image app's "Run model" picker now offers a fifth generator: Stable Diffusion 1.5 img2img, hosted by Cloudflare. Same shape as the others (edit your image with a prompt), but ~8x cheaper (~$0.005/image) and noticeably faster (~3s). Trade-off: it's an older model, so style fidelity is rougher than the BFL FLUX Kontext options.
Apps: image
Categories: added
Pick Stable Diffusion 1.5 (fast/cheap) as your generatorSD 1.5 img2img is now selectable from the "Run model" picker — hosted by Cloudflare. Best when you want something quick and cheap to iterate on, or when the FLUX gateways are busy. Older architecture, so prompts behave differently — keep the prompt short and the input image clear.
FLUX Kontext Pro via fal — second route for the same model
0.22.0 · 2026-05-28 · minor
The Image app's "Run model" picker now offers a fourth generator: FLUX Kontext Pro routed through fal (alongside the Replicate route). It's the same Black Forest Labs Kontext edit model — same $0.04/image, same prompt-faithful transformations — just a second gateway. If one route is slow or busy, the other gives you a backup.
Apps: image
Categories: added
Pick BFL FLUX Kontext Pro via falFLUX Kontext Pro is now selectable from the "Run model" picker via two vendors — Replicate and fal — for the SAME underlying model. fal's route typically takes a little longer (the queue can sit at IN_QUEUE briefly) and the output is JPEG, but capacity is independent so if one route is busy you have a backup.
FLUX Kontext Pro joins the image-generator picker
0.21.0 · 2026-05-28 · minor
The Image app's "Run model" picker now offers a third generator: Black Forest Labs' FLUX Kontext Pro (via Replicate) — a state-of-the-art image-EDIT model that's strong at coherent, prompt-faithful transformations and adds no watermark to your output. Like the others, only models that are actually available appear, each with its cost estimate and typical time before it runs.
Apps: image
Categories: added
Pick BFL FLUX Kontext Pro as your generatorFLUX Kontext Pro is now selectable from the "Run model" picker (vendor: Replicate). It's an edit-first model: describe the change you want as an instruction ("change the background to …") and Kontext applies it across the image. No SynthID-style provider watermark on the output.
Remember your favorite image generator
0.20.0 · 2026-05-27 · minor
Pick the image generator you like and set it as your default — it pre-selects every time you open the Run-model picker, and you can still switch per run. If your default ever isn't available, the picker falls back gracefully instead of offering a model that can't run.
Apps: image
Categories: added
Set a default generator"Set as my default" on the Run-model picker remembers your favorite generator across sessions and pre-selects it next time. The default always resolves against what's actually available, so it never pre-selects a model that can't run.
Choose your image generator
0.19.0 · 2026-05-27 · minor
Image generation now offers more than one AI model: pick OpenAI gpt-image-2 or Google's Nano Banana (Gemini 2.5 Flash — faster and cheaper) from the Run-model picker. The picker only ever shows models that are actually available, and each shows its cost estimate and typical time before it runs. More models (and bring-your-own-key) are on the way.
Apps: image
Categories: added
Pick your generation model (now incl. Google Nano Banana)The "Run model" picker now lists multiple image generators — OpenAI gpt-image-2 and Google Nano Banana (Gemini 2.5 Flash) — each with its own cost + expected-time estimate. Only available models appear, so you never pick one that can't run.
Generate a new image from yours with AI
0.18.0 · 2026-05-27 · minor
The Image app can now CREATE a new image derived from the one you uploaded: describe what to change, pick a style (watercolor, line art, 3D render…), and hit "Run model". The result is saved to your images with a record of what made it, so you can open it full-size, analyze it, or favorite it like any other image.
Apps: image
Categories: added
Run model — img2img generation (OpenAI gpt-image-2)Turn your image into a new one: a prompt + an optional style + "Run model" generates an edited version (currently via OpenAI gpt-image-2), saved to your gallery with its lineage (the model, prompt, and style that produced it). Shows the cost estimate + expected time before it runs. More generator models are coming.
Save your image analyses as presets
0.17.0 · 2026-05-27 · minor
You can now save which AI analyses you usually run. Save your current picks as your default and they'll pre-select every time you choose an image; save named presets and apply them with one tap. Re-saving over an existing preset shows a plain before→after of what's changing before it overwrites.
Apps: image
Categories: added
Default + named presets for run-allSave your chosen AI analyses as a default (auto-applied on every upload) or as named presets you can apply in one tap. Overwriting a preset first shows what's being added and removed; the first save of a preset is silent.
Choose your AI analyses and run them together
0.16.0 · 2026-05-27 · minor
On the Image page you can now pick which AI analyses to run — a title & description, the detailed objects/palette/vibe, and a reverse-image web lookup — and run them all at once. Nothing runs until you choose; picking a deeper analysis automatically includes the title step it needs, and a single confirmation shows every cost, the total, and who each one is sent to before anything spends.
Apps: image
Categories: added
Pick your AI analyses and run them in one goChoose any combination of the AI analyses for an image and run them together. A dependent analysis auto-includes the step it needs, and one confirmation itemises each estimate, the total, and the recipient (OpenAI and/or Google) before it runs. If part of a batch fails, the rest still complete and you're told what didn't.
One place to work with an image
0.15.0 · 2026-05-27 · minor
The Image app now has a single front door: choose an image once and you immediately get its colours — average, dominant, a balanced palette, harmonies, and colour psychology — and, when you're signed in, you can describe it with AI and save it from the same place. The separate "Describe" and "Average" pages have been folded into it (old links redirect automatically).
Apps: image
Categories: changed
Upload once, then choose what to doImage analysis and AI "describe" now live on one page: pick an image to get its colours instantly (in your browser), and — signed in — describe it with AI and save it without switching pages. The old Describe and Average pages redirect here.
Richer reverse-image results — captions + a web-informed title
0.14.0 · 2026-05-27 · minor
The "Where this image appears" results got more useful: each closest-match thumbnail now has a caption (its source + match type + a link) and the section ends with a plain-English summary. And when an image is a strong match online, a "Web-informed (v2)" title and description are added (grounded in the web match), shown alongside the original AI reading — never replacing it — and noted in the colour psychology.
Apps: image
Categories: added, changed
Captions + summary on reverse-image matchesEach closest-match thumbnail now shows where it's from + the match type + a link, and the section ends with a one-line summary of what was found.
Web-informed (v2) title on a strong matchWhen your image is a strong match online, a web-grounded title and description are generated and shown beside the original AI reading (never replacing it), and the colour psychology notes the likely subject — always flagged as a web guess, not certain fact.
See where your image appears on the web
0.13.0 · 2026-05-27 · minor
A saved image now has a "Where this image appears" section: a reverse-image search via Google tells you its best-guess label, the most likely source, the pages it shows up on (with links), and thumbnails of the closest matches. It runs only when you ask, behind a one-time confirm that names Google (which doesn't train on or store your image).
Apps: image
Categories: added
Reverse-image provenance — where does this appear online?On a saved image's page, run "Find where this appears" to reverse-image search it with Google: you get a best-guess label, the most likely source, a list of pages it appears on (title + link, exact matches flagged), and thumbnails of the closest matches. It's opt-in per image and asks before it sends the image to Google.
See the cost before AI analysis — and confirm before it spends
0.12.0 · 2026-05-26 · minor
Describing an image now tells you up front what an analysis costs (about $0.0013 per image, an estimate — never a bill), and the deeper 'Analyze in detail' pass asks you to confirm the spend before it runs. The same one-time confirm is shared with the saved-image dossier, so you only okay detailed AI once per visit.
Apps: image
Categories: added
Cost shown before you analyzeThe Describe an image page now shows the estimated per-image cost up front, and detailed analysis (objects, palette, vibe) asks you to confirm before it spends — so an AI run is never a surprise. The figure is always an estimate, not a bill.
Find and jump to any tool from anywhere
0.11.0 · 2026-05-26 · minor
Navigation got a real home. Every page now has a persistent app switcher (jump straight to Link, QR, Color, or Image — or back to the Apps home — from wherever you are), the Apps home lists every app AND its sub-tools, and search now finds those sub-tools too (try 'palette', 'generate', or 'average'). The sub-tool pages are also in the sitemap so search engines can find them.
Apps: link, qr, color, image
Categories: added, changed
Jump to any tool from any pageA persistent app switcher now sits on every page — go straight to Link, QR, Color, or Image, or back to the Apps home, without hunting for a link. No more dead-ends.
The Apps home lists every tool + its sub-toolsThe home page now shows each app with its sub-pages (color theory, palette analysis, generate a color, the image gallery/describe/average tools) — and search matches them, so typing 'palette' or 'generate' takes you there.
See a saved image's colors — average, dominant, notable, palette & harmony
0.10.0 · 2026-05-26 · minor
Open a saved image and its colors are now broken down right on the page: the average color, the dominant colors, the NOTABLE colors (distinct colors by how much of each appears — near-identical shades are merged, so a real second color surfaces instead of five shades of the first), a balanced palette, and color harmonies. Choose how many to show (1, 2, 3, 5, 8, or 13), and every color shows its HEX, RGB, and OKLCH and links to its full color page. All computed in your browser.
Apps: image
Categories: added
Notable colorsThe distinct colors in your image, ranked by how much of each appears — near-identical shades are grouped, so you see a genuinely different second or third color, not five shades of the same one. Pick how many with the 1·2·3·5·8·13 stepper.
Average, dominant, palette & harmonyA saved image now shows its average color, its most-frequent (dominant) colors, a balanced spread, and color harmonies — each swatch in HEX, RGB, and OKLCH, linking to that color's page.
A cleaner image page — analyze a saved image in detail
0.9.0 · 2026-05-26 · minor
Open any saved image and you'll see a tidier one-page view: the picture (now kept at higher resolution), its title and description, and — if you haven't run it yet — an 'Analyze in detail' button that pulls out the objects, color palette, and vibe right there, without re-uploading. Favorite and delete live on the same page.
Apps: image
Categories: added, changed
Analyze a saved image in detailOn a saved image's page, click 'Analyze in detail' to pull out its objects, color palette, and overall vibe — without re-uploading. It deepens that same image in place.
A cleaner one-page image viewEach saved image now has a single tidy page: the picture (kept at higher resolution), its description, and its detailed analysis, with favorite and delete in one place.
Delete images, and see your recent activity
0.8.0 · 2026-05-26 · minor
You can now delete a processed image — it's removed everywhere it appeared (your gallery, your favorites, and the stored picture), with no half-deleted state. The Image and Color apps now show a 'Recent activity' list of what you've done, matching Links and QR codes. Under the hood, every 400faces app now follows the same core contract — so favoriting, tracking, and managing your things works the same everywhere.
Apps: image, color
Categories: added
Delete an imageRemove a processed image for good from its page. It disappears from your gallery and your favorites and the stored picture is deleted. Deleting one that's already gone (or twice) does nothing harmful.
Recent activity on the Image appYour image gallery now shows a recent-activity list — what you favorited, deleted, and more — the same feed Links and QR codes already have.
Recent activity on the Color appThe Color glossary now shows your recent color activity when you're signed in, matching the other apps.
Your images — kept, favorited, and all in one place
0.7.0 · 2026-05-25 · minor
When you're signed in, every image you process is now automatically kept in your image gallery — no save step. Favorite the ones you care about (the same pin you use for colors, links, and QR codes), and open any saved image to see its analysis again. Anonymous use still works locally; nothing is kept unless you have an account.
Apps: image
Categories: added
Processed images are kept automaticallyProcess an image while signed in and it's saved to your gallery — like a link you create is kept. The picture is stored privately; open it any time to see its title, description, objects, and palette again.
Favorite an imagePin the images you care about — the same favorite you already use for colors, links, and QR codes. Your favorites sit at the top of the Image app.
Your image gallerySee every image you've processed and your favorited ones in one place, and add a new one to process — alongside the existing colors, links, and QR lists.
Describe & analyze any image with AI
0.6.0 · 2026-05-25 · minor
Drop an image and get an AI-written title and one-sentence description in seconds — then, if you want, a deeper pass that pulls out the notable objects, a color palette, and the overall vibe. Your image is downscaled in your browser before it's sent to OpenAI to analyze, and it isn't stored.
Apps: color
Categories: added
Describe an imageChoose an image and get an AI-written title and a one-sentence description. The image is downscaled in your browser first, then sent to OpenAI to analyze — it isn't stored.
Analyze in detailGo deeper on any described image: a forensic pass lists the notable objects (with where they sit and how prominent they are), extracts a color palette you can open as full color pages, and names the overall vibe.
Favorites — pin the colors, links & QR codes you care about
0.5.0 · 2026-05-25 · minor
You can now favorite a color, a short link, or a QR code and find it again fast. Each tool shows your favorites in place, and your account page gathers all of them together, grouped by type.
Apps: color, link, qr
Categories: added
Favorite a colorStar any color from its page to pin it. Your favorite colors appear on the Color tool and on your account page — open one to jump straight back to its full dossier.
Pin the links you use mostFavorite a short link from your manage list so it's easy to find again, and see all your pinned links on your account page. A favorite still shows with a clear label even if the original link is later removed.
Pin your QR codesFavorite a QR code the same way — pinned codes are gathered on your account page alongside your other favorites, grouped by type.
Color tools — generator, psychology & image analysis
0.4.0 · 2026-05-25 · minor
The Color tool grew a set of makers: a shareable random-color generator, pages on the psychology of every color family, a palette analyzer, and an image tool that pulls the average color, dominant colors, a balanced palette, harmonies, and color psychology straight out of any picture — all in your browser.
Apps: color
Categories: added
Random color generatorGenerate a perceptually-even random color and a reproducible five-color palette. Every result has a shareable link — the same address always regenerates the same colors — and you can constrain it to a color family.
Color psychology, by familyNew pages explain what each color family means — its associations, positive and negative readings, and cultural notes — every claim shown with its sources. The associations are largely Western and contemporary, and the pages say so.
Analyze a palettePaste a set of colors and see how they relate — complementary, analogous, triadic — plus a combined reading drawn only from those sourced family meanings, with every source listed.
Pull the colors out of any imageChoose an image to get its average color, dominant colors with percentages, a balanced palette, color harmonies, and the combined color psychology. Your image never leaves your browser — only a small list of its colors is used for the math.
The color dossier
0.3.0 · 2026-05-25 · minor
Every color page now shows that color across 35+ color models — RGB, HSL, OKLCH, CIELAB, the video and wide-gamut spaces, and more — plus print-accurate CMYK, the cultural story behind famous colors, color psychology by family, and quick navigation between colors.
Apps: color
Categories: added, improved
Every color, across 35+ color modelsEach color page now computes that color in over 35 color models — from everyday RGB/HSL/OKLCH to CIELAB, the video spaces (Y′CbCr, Y′UV), wide-gamut (Display-P3, Rec.2020, ProPhoto), and perceptual spaces (OKLab, Jzazbz, IPT). Models with no real formula (like Munsell and NCS) are shown honestly as defined-by-reference-samples rather than a made-up number, and every value is one tap to copy.
Print-accurate CMYKCMYK now uses a real ICC printing profile (US Web Coated SWOP v2) instead of the rough screen formula — so black shows as a true rich black, the way a press actually prints it. The quick screen estimate is kept alongside, clearly labeled.
The story behind famous colorsLand on a famous color — Tiffany Blue, International Klein Blue, a brand red — and see its cultural significance with sources. Every color also shows color psychology for its family, with honest notes that associations vary by culture.
Move between colorsJump to the previous or next named color, hop to a random color, or search by name or hex — right from any color page. Save a color to your favorites in one tap.
A short link for every colorEvery color now has a memorable address: 400.dev/<hex> — e.g. 400.dev/ff0000, or the shorthand 400.dev/f00 — jumps straight to that color's page.
What everyone calls this colorEach color page now lists its name across many naming systems — CSS, X11, xkcd, ISCC-NBS, Ridgway, Wikipedia and more — showing the exact name where a system has one and the nearest match otherwise, each with its source and license.
Tools, accounts, and QR codes
0.2.0 · 2026-05-24 · minor
400.dev grew from a single tool into a small suite — a Color tool with 31,900 named colors, QR codes for your links, personal accounts with display handles, your Saved Artifacts in one place, a tools home, a public status page, and safer link sharing.
Apps: link, qr, color, account, platform
Categories: added, improved, security
Color tool — 31,900 named colorsLook up any color by name or hex. Each color gets a full page: every code (HEX, RGB, HSL, OKLCH, CMYK, LAB), contrast checks, harmonies, tints and shades, color-blindness previews, its color family, and the nearest named colors. Save colors to your account.
Your Saved Artifacts, on your accountEverything you've made across tools — links, QR codes, and saved colors — now lives on your account page, grouped by app, newest first, with search.
QR codes for any linkGenerate a QR code for any saved link, customize its colors, and download it as an image. Scans are counted separately from clicks.
Your account and display handleEvery signed-in person now has an account page to set a unique lowercase display handle and an avatar, with instant availability checks and suggested alternatives when a name is taken.
Find your tools fastThe tools home now shows your favorites and recently used tools, plus a unified search across everything available to you.
Create your own external linksMembers with a verified email can now shorten external destinations, not just internal ones, with sensible monthly limits.
Public status pageA live status page at status.400.dev shows current uptime and any active incidents.
Stronger link safetyNew external destinations are screened against known threats, re-checked over time, and can be reported and taken down quickly.
Link foundation
0.1.0 · 2026-05-09 · minor
The first 400.dev tool is now in place with saved links, shared link data, and safe internal redirects.
Apps: link
Categories: added, improved, security
Create saved linksSigned-in users can create and revisit 400.dev links from the Link tool.
Links are shared platform dataOther 400.dev tools can create and reuse links through the platform link service.
External links are gatedNew external destinations stay blocked until safety checks are proven.
Platform access foundation
0.0.1 · 2026-05-09 · patch
400.dev now has the core sign-in, organization, usage, and agency-access foundations needed for the tool platform.
Apps: platform, auth, dash
Categories: added
Sign in with Google or emailUsers can sign in with Google or request an email sign-in link.
Personal workspacesEvery signed-in user gets a personal workspace so saved tool history has a home.
Agency workspace gateThe agency dashboard is separated from public tools and only opens for accounts with access.