Turns sampler previews on for this one workflow, without touching the launch flags and without affecting other workflows on the server. Drop it anywhere on the…

A ComfyUI custom node pack by QG: 41 nodes under QG-tools - LoRA Loader (searchable rows, drag strengths, trigger words, templates), a 3-in-1 Checkpoint/UNET + CLIP + VAE loader, Empty Latent Resolution (ratio + megapixels), canvas Image Crop + Rotate + Pad with video timeline, Load Image with a canvas mask editor, Image Compare (slide / A / B / erase), Image Export (JPEG / PNG / WEBP with quality), Canvas Label and Markdown Note (free text, never executed), Workflow Note card, Workflow Switches, Run Timer, Resize, Size, Number Slider (own range), Seed history, Text, Markdown Reader, Translate, Any Switch, Display Any, If/Else, Watermark, Text Overlay, Grid, Mask Colorize, Mask Concat, Mask Refine, Text Concat, Text Replace, Text Split, Size Selector, Math (one expression over variables a-z), Free Memory. All answer to English search aliases.

ComfyUI-QG-Tools

method

max_size

hide_sampler

Turns sampler previews on for this one workflow, without touching the launch flags and without affecting other workflows on the server. Drop it anywhere on the canvas -- no wiring needed. Three modes: auto and latent2rgb map the latent straight to RGB without loading a model; taesd decodes with TAESD for a near-real picture (it needs the taesd models in vae_approx); none also switches off previews that the server enabled globally. The frames come from ComfyUI's own samplers, and the setting resets when the run finishes. Hide sampler thumbnail keeps the frames off the sampler node so they only show up here -- a display setting, it saves no server work.

Name	Type	Default	Description
method	COMBO	auto	How preview frames are decoded. auto / latent2rgb: map the latent straight to RGB, no model is loaded, cheapest. taesd: decode with TAESD for a near-real picture; needs the taesd models in vae_approx. none: also switch off previews that the server had enabled globally.
max_size	INT	51264–2048	Longest edge of the preview image, in pixels. Smaller sends far less data, which helps a lot over a slow connection. Previews only -- the saved image is untouched.
hide_sampler	BOOLEAN	true	Hide the same frames on the sampler node and keep them here only. Front-end setting, nothing is sent to the server; the preview still runs, so the cost is the same.

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