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A full list of JavaScript operators with examples

Filet Pattern Maker
Crochet Chart Maker
Stitchmate
PBNify
Scatter Plot Maker
Piskel
Yarn Over Hook
Turn any photo into a real crochet chart: grid, color palette, and stitch counts. Free generators for graphgans, C2C, tapestry, mosaic, and filet crochet.
Which is more popular?
CrochetPatternGen might be a bit more popular than JavaScript Operator Lookup. We know about 1 link to it since March 2021 and only 1 link to JavaScript Operator Lookup.
Website, pricing, platforms and company facts side by side.
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| Website | joshwcomeau.com | crochetpatterngen.com |
| Pricing | — | |
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of JavaScript Operator Lookup yet.
CrochetPatternGen turns any photo into a real, stitch-ready crochet chart in seconds. Upload a picture of your pet, kid, logo, or drawing, and the generator maps it onto a stitch grid with a yarn-friendly color palette and exact stitch counts per color. Five technique presets cover graphgan...
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing JavaScript Operator Lookup and CrochetPatternGen.
CrochetPatternGen's answer:
Next.js (static site on Cloudflare Pages), Python/Flask image-processing service (Pillow, NumPy), ONNX-based background removal (rembg/u2net), Docker on a small VPS, Cloudflare for CDN/WAF/DNS. No LLM in the chart pipeline — conversion is deterministic image processing.
CrochetPatternGen's answer:
We launched in July 2026 and focus on individual crocheters rather than named accounts — no big customers to list yet. Early users are hobbyist blanket makers and Etsy pattern sellers.
CrochetPatternGen's answer:
It started from a simple observation: people search "crochet cat pattern" thousands of times a month, but turning your own photo into a pattern still meant hand-tracing pixels or buying expensive custom patterns. At the same time, marketplaces were being flooded with AI-generated fake patterns that don't actually work. CrochetPatternGen was built to be the honest alternative — deterministic conversion instead of AI hallucination, with stitch counts and quality scoring so every chart is genuinely crochetable.
CrochetPatternGen's answer:
CrochetPatternGen doesn't draw patterns with AI guesswork — it converts real photos into stitch-ready crochet charts through deterministic image processing. Every chart comes with a controlled color palette and exact per-color stitch counts, so what you see on the grid is exactly what you stitch. It's also honest about what's automated: previews are labeled "digital preview" and AI-generated content is disclosed site-wide.
CrochetPatternGen's answer:
Three reasons: speed (photo to finished chart in under a minute, vs hours of manual tracing in chart editors), precision (per-color stitch counts that double as a yarn shopping list, which most generators don't provide), and honesty (no fake ratings, no undisclosed AI content, free tier that actually works without sign-up). It also covers five techniques — graphgan, C2C, tapestry, mosaic, and filet — including realistic C2C block proportions most tools ignore.
CrochetPatternGen's answer:
Crocheters who want to turn personal photos into blankets, pillows, and panels — mostly hobbyists making graphgans and C2C photo blankets, plus Etsy sellers who need fast, countable charts for custom orders. The typical user is a casual crocheter, not a designer: she has a photo she loves and wants to crochet it, without learning chart-editing software.
Share your experience with using JavaScript Operator Lookup and CrochetPatternGen. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


If you replace your || with ?? You should get the behaviour you are after. This is a good reference for what the operators do in js: https://joshwcomeau.com/operator-lookup. Source: about 5 years ago
The hosted version with a free pattern library: crochetpatterngen.com. - Source: dev.to / about 2 months ago
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