CodeKitHubWhat Is This Tool?
The Signal Chat Generator is a browser-based mockup tool that recreates Signal's clean, minimalist interface — its signature blue outgoing bubbles, simple header bar, and the phone status bar — so you can type your own conversation and export it as a shareable image.
Signal is known for its privacy-focused, no-frills design compared to other messaging apps, and this generator matches that restrained look with a single accent blue rather than gradients or decorative chrome.
For entertainment and design use only: this tool is built for jokes, memes, skits, presentation slides, UI/UX prototypes and social media content. It must never be used to fabricate fraudulent evidence, harass or defame someone, or impersonate a real person's actual messages — doing so can be illegal depending on your jurisdiction and is strictly against the intended use of this tool.
Nothing you type ever leaves your device — the whole conversation is rendered with the HTML Canvas API directly in your browser, and the PNG is generated and downloaded locally. There is no server upload, no account and no tracking of your message content — fittingly, given Signal's own reputation for privacy.
Why Use It?
- Create funny fake conversations for memes and social posts.
- Mock up chat-based UI concepts styled after Signal, in light or dark mode.
- Illustrate a script, skit or story with a realistic chat screenshot.
- Prototype Signal-style notification or messaging designs.
- 100% local rendering — your conversation text never touches a server.
How to Use
- Set the contact name, status text and pick dark or light theme.
- Upload a photo for the avatar, or leave it as a colored circle with initials.
- Add message rows: type the text, pick a side (them/me) and a timestamp.
- For your own messages, choose the read-receipt status.
- Adjust the status bar (time, battery, signal) to taste.
- Watch the phone-shaped preview update live, then click "Download PNG" to save the image.
Example
Input
Contact: "Alex" · Message 1 (them): "Are we still on for tonight?" · Message 2 (me, read): "Yes! See you at 8 😊"Output
A 375×812 PNG image showing a Signal-style screen: a plain header with "Alex", a light gray bubble on the left with the first message, and a blue bubble on the right with the reply.The image is generated instantly in the live preview canvas and downloads with a single click — no waiting, no upload.
What you can customize
- Contact name, status text and dark/light theme.
- Avatar: upload a real photo (cropped to a circle) or pick a fallback color.
- Unlimited message rows, each with its own text, side (them/me) and timestamp.
- Read-receipt status per message you send.
- Phone status bar: time, battery percentage and signal strength.
Responsible use
This generator exists to make it easy to create clearly fictional chat images for humor, storytelling and design work. It is not a tool for fabricating evidence, staging harassment, or misleading anyone into thinking a fake conversation is real. If you plan to share an image made with this tool, consider adding context (like "fake" or "mockup") so viewers understand it is not an actual conversation.
Frequently Asked Questions
Is it legal or ethical to use this tool?
The tool itself is legal to use for entertainment, mockups, presentations and design work. What is not legal or ethical is using the generated image to deceive someone — for example presenting it as a real conversation to commit fraud, to harass or defame a person, or to impersonate someone's actual messages. Please only use this for clearly fictional or illustrative purposes.
Does the tool upload my messages or photo anywhere?
No. Every message, name, photo and setting you enter stays in your browser's memory and is drawn directly onto a canvas element using JavaScript. The PNG file is generated and downloaded on your device — nothing is ever sent to any server, which mirrors the privacy-first ethos of the real Signal app this tool mimics visually.
Should I use this or the WhatsApp / Messenger chat generator instead?
If your scene is specifically about Signal — perhaps to make a joke about its privacy reputation — use this one for its accurate minimalist blue look. If the joke or mockup is meant to look like WhatsApp's green theme or Messenger's rounded blue bubbles instead, use those dedicated generators; if you don't need a specific real platform's look at all, the Custom Chat Generator lets you pick any bubble colors you want.
Can I upload a real photo as the avatar?
Yes. Click "Upload photo" to use any image from your device as the contact's avatar — it's cropped to a circle automatically. If you skip this, the avatar falls back to a colored circle with the contact's initials. The photo is only used locally in your browser and is never uploaded anywhere.
What image size does it export?
The preview and exported PNG use a phone-screen aspect ratio (375×812 by default), which looks natural when shared on social media or embedded in a presentation.