HEISS UI v0.2.0

The first tagged release of HEISS UI, a local studio for ComfyUI, built on
J-AI Studio by jasperdevs. These
notes cover everything that changed since the fork.

Highlights

• Drop in a model and go. HEISS reads each model file's weights to tell what
  it is: 16 image and 5 video families, from SD 1.5 to Krea 2, Wan 2.2 and
  MiniMax H3. It uses the settings the model's makers recommend and pairs it with
  a matching text encoder and VAE, or downloads one for you.
• Smart upscale. One click on a finished image runs SeedVR2 at Fast,
  Balanced or High effort, with an optional face pass and a before/after slider.
  A guided setup installs everything it needs.
• LoRAs. A searchable library grouped by folder, stacks saved per
  model family, favorites, recents, drag to reorder and undo.
• Private Vault. Encrypt chosen generations, their prompts and settings
  behind a password.
• Prebuilt downloads. Unzip, double-click Start HEISS UI, done: about 30 MB
  of runtime packages, no build step.

Added

Models

• 21 model families recognised from the weights: SD 1.5, SD 2.x, SDXL (Pony,
  Illustrious/NoobAI, v-pred, Lightning, DMD2, Hyper, Turbo), Pony V7, SD 3.5,
  Flux.1 (dev, schnell, de-distilled), Flux.2 Dev and Klein 4B/9B, Chroma,
  HiDream, Qwen-Image (incl. 2512 and 2.1), Z-Image, Krea 2, Anima, Wan 2.1,
  Wan 2.2 5B, the Wan 2.2 14B high/low-noise pair, HunyuanVideo 1.5 and
  MiniMax H3.
• Each family runs with the settings from its official templates and model
  cards, including Turbo/Base and Raw variants, clip skip for Pony and
  Illustrious, and v-prediction for NoobAI merges.
• All-in-one checkpoints and model-only files both work. HEISS sees which parts
  a checkpoint carries and fills the rest from compatible installed files,
  preferring abliterated text encoders.
• Missing text encoders or VAEs are named with a one-click download into
  ComfyUI's folders.
• One text encoder picker per slot, and a "Built into the checkpoint" VAE option.
• A "Use as" picker in Settings for files HEISS can't identify, including the
  variant.

Smart upscale

• SeedVR2 upscaling from any finished image at Fast, Balanced or High effort,
  with an optional face detail pass. The original is always kept.
• A compare slider in the viewer: drag, double-click to centre, or use the arrow
  keys. Zoom and pan keep working while comparing.
• A guided setup: install the nodes through ComfyUI Manager or one terminal
  command (macOS, Linux, PowerShell, Command Prompt), download the model with
  resume and checksum checks, then upscale the image you clicked.
• A download widget with percent, speed and time left while setup runs.
• A popover that says why an image can't be upscaled.

LoRAs

• A LoRA library grouped by nested folders, with search, favorites, recents and
  suggestions for the current model family.
• Stacks saved per model family, shown as chips; one click loads a stack.
• Cards with an on/off switch, a strength slider, drag-to-reorder (keyboard too)
  and remove with undo, plus All off and Clear.
• Warnings for LoRAs missing from ComfyUI or past a workflow's limit.

Reference and start images

• A reference library in the composer with an Uploads tab and pointer-aware
  drops; the chosen image survives a reload.
• Workflows can let a reference image set the output size and aspect.
• A bundled Flux 2 image-edit workflow.

Workflows

• A thumbnail workflow gallery with search, an image/video switch, favorites,
  filters and a detail panel listing missing nodes.
• Two-step import that previews name, type, family, status and control mapping
  before saving. Drop JSON files anywhere on the gallery.

Studio

• Private Vault: password-protected, encrypted storage for chosen generations
  and their prompts and settings, with backup export.
• An About page with version, update check, credits and local stats: outputs,
  render time, megapixels, streaks and most-used workflow.
• Output folder tools: Browse, automatic detection and live checking.
• Gallery bundles that group runs.
• A clear offline state with Retry, and deep links from errors to the right
  settings.
• Better layout on phones and in Safari.

Changed

• Rebranded to HEISS UI, with a new website, mark and wordmark. Settings saved
  under the old J-AI names are still read.
• The studio is rebuilt around the generation composer: no top bar, a compact
  dock, and one frosted glass, control size and radius throughout.
• Every dialog uses one modal; settings live in seven sections (General,
  Generation, Upscale, Library, Privacy, Connection, About).
• Generation previews resolve from a pixel mosaic and show step and elapsed time.
• Gallery thumbnails are small WebP images, about 20 times lighter.
• Geist replaces Inter; the ember accent now only marks status and heat.
• Toasts appear top centre and above dialogs.
• Picking a workflow of the other type switches between image and video.
• Escape leaves zen mode once nothing else is open.

Fixed

• Generating and saving LoRA stacks over plain-HTTP LAN failed.
• LoRA edits could overwrite each other across devices or be lost offline.
• A crash could wipe settings; files are now written atomically with a backup.
• A wrong output folder silently hid generations.
• FLUX.1 Krea was mistaken for Krea 2, and renamed fine-tunes went unrecognised.
• Toasts, dropdowns and tooltips sat under dialogs.
• The gallery flashed as every tile replayed its new-image animation.
• Offline workflow checks reported every node as missing.
• Built-in workflows could be deleted.
• Many smaller LoRA, upscale and layout issues.

Removed

• The top bar and logo.
• The Workflows tab in Settings (moved into Library).
• The DarkBeast example workflow.
• Unused icon libraries and packages: the install is less than half the size.

Under the hood

• Runtime needs only express, busboy and sharp: 32 MB for a release install,
  down from 563 MB of node_modules.
• npm start builds and repairs itself on first run.
• One graph builder for every model family.
• Semantic versioning, a changelog and npm run release; tagging publishes the
  download.
• 56 automated tests, run in CI.

Install

Download heiss-ui-0.2.0.zip, unpack it and double-click Start HEISS UI
(.command on macOS, .bat on Windows). You need Node.js 20+ and a running
ComfyUI. On macOS, the first launch may need System Settings → Privacy &
Security → Open Anyway.

Thanks to jasperdevs for J-AI Studio, which HEISS is built on.