Local-first AI image workbench

Turn image prompts into a reusable artifact system.

Imgen keeps prompts, provider settings, model parameters, generated images, tags, and conversations tied together in a browser-first workspace.

Open the workbench Star on GitHub

Local-first archive

Bring your own key

Open-source workflow

Provider credentials live in browser storage or OPFS and are sent through /api/generate only when you request a generation.

Browser workspacePrompts, keys, images

OPFS + SQLiteLocal archive

/api/generateTransient relay

Why it exists

Stop treating image generation like a slot machine.

The best generations usually come from a repeatable system: precise language, known model settings, and a way to return to the source.

A good prompt disappears into chat scrollback.

The prompt becomes a reusable creative brief.

Model, size, quality, and provider choices get separated from the image.

Every output keeps its exact production context attached.

Generated images pile up as one-off downloads.

Artifacts land in a searchable, tagged local gallery.

Artifact workspace

Everything around the image stays attached.

The workspace is designed around the artifact: the brief that made it, the provider that generated it, and the gallery context that helps you reuse it later.

Compose

Creative briefs, not prompt scraps

Write with palette, medium, crop, texture, and reference context beside provider settings so the prompt can drive a full visual series.

“rainy bookstore launch, risograph texture, coral ink, indigo shadows…”

palettetextureseries

A local library with memory

SQLite WASM + OPFS keeps conversations, metadata, images, favorites, and tags together in the browser.

Route

Provider routing stays explicit

Point Imgen at OpenAI, Azure OpenAI, or compatible endpoints and keep model choices visible per request.

BrowserProvider

transient relay only

Curate

Gallery curation built in

Favorite, tag, filter, and jump back to the source conversation instead of losing useful generations in downloads.

favoritetagged

Three moves

From empty gallery to reusable image system.

Connect a provider

Add an OpenAI-compatible key and optional base URL. Credentials stay in browser storage or OPFS until a generation request.

Write a reusable brief

Keep prompt language, model, size, quality, and routing controls together before you generate.

Curate the artifact

Each result lands in the local gallery with tags, metadata, and a route back to the source conversation.

Reusable briefs

Prompts that behave like design specs.

Keep the language specific enough for a series: palette, medium, crop, texture, and context travel with each artifact into the local gallery.

prompt · 01

Editorial image system for a rainy bookstore launch, risograph texture, coral ink, indigo shadows, quiet shelves

prompt · 02

Ceramic coffee ritual product study, north-window light, soft linen backdrop, muted sand palette, shallow focus

prompt · 03

Alpine travel poster series at golden hour, layered ridgelines, cinematic crop, low-contrast painterly atmosphere

prompt · 04

Founder portrait in a mid-century studio, 35mm film grain, teal wall, brick textile, restrained editorial lighting

prompt · 05

Coastal town map as a design artifact, topographic linework, sepia ink, cream stock, labeled neighborhoods

prompt · 06

Cyanotype botanical archive for a gallery wall, fern fronds, deep indigo wash, bright paper grain, quiet margin