Green Background Generator
Make a green background or green wallpaper in 10 styles. Two are drawn only for green: a chalkboard with eraser smudges and chalk dust, and a flat green screen in one even colour. The other eight are a gradient, soft clouds, a checkerboard, grid paper, marble, paper, soft blobs and polka dots. Pick one of 11 sets of greens, from mint, sage and jade to emerald, kelly green, forest green, olive green and neon green. Every colour stays green: each set is checked against one stated range, and so is every pixel of the picture. Set the number of shapes, squares, smudges or lines, the angle, the softness and the grain. Every picture comes from a seed number: the same seed and size always give the same picture, and New seed gives you a new one. Choose desktop, 4K, phone, a 16:9 video-call background, tablet, square, banner or your own size up to 4096 pixels, then download a PNG or JPG, or a PDF to print. Nothing is uploaded.
100% private — everything runs in your browser. Everything runs in your browser; nothing is uploaded.
The preview is the same picture drawn smaller. PNG and JPG download at the full size; the PDF fits the picture on one page.
Picture
Details
Every colour stays green: hue 75° to 165°, saturation 15 % or more, lightness 8 %–92 %.
Runs in your browser with our own code: nothing is uploaded or saved. Every gradient, smudge, check, line, vein, cloud, blob and dot is drawn by our own code from the seed; it is artwork, not a photograph. You may use what you make here, including commercially, with no credit needed.
How to make a green background
- Pick a preset: gradient, chalkboard, green screen, checks, grid, marble, paper, clouds, blobs or dots.
- Choose the style and one of the sets of greens.
- Set the number of shapes, squares, smudges or lines, the angle, the softness and the grain.
- Press New seed for a new picture; the same seed always gives the same one.
- Choose a size and download the PNG or JPG, or the print PDF.
What you can use it for
- Phone lock screens and calm desktop wallpapers
- A flat green screen to film or photograph in front of, at the exact size of your screen
- Chalkboard backgrounds for menus, classroom slides and signs
- Story, post and thumbnail backgrounds
- St Patrick’s Day, spring and nature posts
- Printed backing paper for cards and scrapbooks
The 16 presets
| Preset | Style | Greens | Size |
|---|---|---|---|
| Fresh green gradient | Gradient | Emerald | 1920 × 1080 |
| Green chalkboard | Chalkboard | Chalkboard | 1920 × 1080 |
| Flat green screen | Flat green screen | Green screen | 1920 × 1080 |
| Green checkerboard | Checkerboard | Kelly green | 1920 × 1080 |
| Green grid paper | Grid | Mint | 1920 × 1080 |
| Green marble | Marble | Jade | 1920 × 1080 |
| Sage paper texture | Paper | Sage | 1920 × 1080 |
| Soft mint clouds | Soft clouds | Mint | 1920 × 1080 |
| Soft lime blobs | Soft blobs | Lime | 1920 × 1080 |
| Green polka dots | Polka dots | Forest green | 1920 × 1080 |
| Dark forest gradient | Gradient | Forest green | 1920 × 1080 |
| Olive chalkboard | Chalkboard | Olive green | 1920 × 1080 |
| Neon green blobs | Soft blobs | Neon green | 1920 × 1080 |
| Phone wallpaper: sage gradient | Gradient | Sage | 1170 × 2532 |
| Video call: flat green screen | Flat green screen | Green screen | 1920 × 1080 |
| 4K emerald marble | Marble | Emerald | 3840 × 2160 |
Each preset only fills in the fields; change any setting afterwards.
The 10 styles
| Style | What is drawn |
|---|---|
| Chalkboard (green only) | A dark board with cloudy wear, wide soft eraser smudges along the angle and fine chalk dust |
| Flat green screen (green only) | One flat colour over the whole picture (grain off), for keying |
| Gradient | A smooth blend of three colours of the set at the angle you set |
| Soft clouds | Soft rounded clouds in a lighter shade on a deeper sky |
| Checkerboard | Squares of two shades, straight or turned (45° gives diamonds) |
| Grid | Fine light grid lines with a heavier line every fourth square, like graph paper |
| Marble | Stone with soft winding light veins |
| Paper | A soft paper texture with tiny fibres |
| Soft blobs | Large blurred circles of colour |
| Polka dots | Round dots in rows, straight or turned |
The 11 sets of greens
| Greens | The five colours | Hue and lightness (worked out by the tool) |
|---|---|---|
| Emerald | #94e6b6, #5ad88e, #2dbe69, #218c4e, #155b32 | hue 145°; lightness 22–74 % |
| Forest green | #72ca7a, #43b14d, #328539, #246029, #163b1a | hue 125 / 126°; lightness 16–62 % |
| Sage | #c1d8b6, #a0c28e, #7ead67, #608b4b, #456336 | hue 101 / 99 / 100°; lightness 30–78 % |
| Mint | #cef3e0, #adebcc, #85e0b3, #54d494, #2eb873 | hue 149 / 150°; lightness 45–88 % |
| Lime | #bbed97, #96e35f, #71d926, #5aad1f, #3f7915 | hue 95°; lightness 28–76 % |
| Olive green | #b2cd84, #95b955, #74943d, #556d2c, #39481e | hue 82 / 81°; lightness 20–66 % |
| Jade | #95dac3, #60c7a5, #3caa85, #2d8065, #205b47 | hue 160°; lightness 24–72 % |
| Chalkboard | #bce6d1, #88d3ad, #29704d, #1e5238, #133424 | hue 150 / 151°; lightness 14–82 % |
| Kelly green | #7de898, #40dd68, #20b646, #188b35, #0f5721 | hue 135°; lightness 20–70 % |
| Neon green | #a2ff99, #69ff5c, #2dff1a, #12d600, #0c8f00 | hue 115°; lightness 28–80 % |
| Green screen | #66ff99, #00ff55, #00b33c, #00852c, #00521b | hue 140°; lightness 16–70 % |
The green range used for every colour and every pixel: hue 75° to 165°, a saturation of 15 % or more and a lightness of 8 % to 92 %.
Sizes
| Size | Pixels | Width ÷ height |
|---|---|---|
| Phone | 1170 × 2532 | 0.462 |
| Desktop | 1920 × 1080 | 1.778 |
| 4K | 3840 × 2160 | 1.778 |
| Video call background | 1920 × 1080 | 1.778 |
| Tablet | 2048 × 2732 | 0.750 |
| Square | 2048 × 2048 | 1.000 |
| Banner | 1500 × 500 | 3.000 |
Every size is drawn at its own pixels, not stretched.
What downloads
| Download | What is in it |
|---|---|
| PNG | The still picture at the full size you chose, every pixel exactly as drawn |
| JPG | The same picture as a smaller JPG (quality 92) |
| One Letter or A4 page with the picture fitted inside 10 mm margins |
| Paper | A 4K picture prints at | Sharpness |
|---|---|---|
| Letter (landscape) | 259.4 × 145.9 mm | 376 px per inch |
| A4 (landscape) | 277.0 × 155.8 mm | 352 px per inch |
To put a new background behind a photo of your own instead, use Change Image Background; to change the size of a picture afterwards, the Image Resizer.
Which tool to use
| You want | Use |
|---|---|
| A green-only background, chalkboard or green screen | Green Background Generator (this page) |
| A red-only background, lacquer or stage curtain | Red Background Generator |
| A new background behind your own photo | Change Image Background |
| A colour blend in any colours, as CSS | Gradient Generator |
| A seamless dot repeat in any colours | Polka Dot Pattern Generator |
For a red wallpaper or a stage curtain, try the Red Background Generator; for a blend in any colours as CSS, the Gradient Generator; for a seamless dot repeat in any colours, the Polka Dot Pattern Generator.
More free tools
More background tools?
Picture and colour tools that run privately in your browser, with no sign-up and no watermark.
Frequently asked questions
Is this a photo?
No. Every gradient, smudge, speck of chalk dust, check, line, vein, cloud, blob and dot is drawn by our own code from the seed: it is artwork, not a photograph.
How do you make sure it stays green?
Every colour in every set is inside one stated range: hue 75° to 165°, a saturation of 15 % or more and a lightness of 8 % to 92 %. The drawing only blends colours from the chosen set, which all share one hue, and darkens very slightly for grain, which keeps the hue. Our tests check all 55 colours, and every pixel of every preset, against that range.
What is the flat green screen?
One even green over the whole picture, with nothing drawn on it: the middle colour of the set you pick (#00b33c in the Green screen set). Keep Grain at 0 for a perfectly flat colour. Download it at the size of your screen or display and set the same colour as the key colour in your keying or video tool. Because nothing is placed, the seed only matters when grain is on.
What is the chalkboard style?
A dark green board with slow cloudy wear, wide soft eraser smudges and fine chalk dust, all in greens from the set. The number field sets how many smudges, the angle turns them and Softness makes them wider.
Which greens are there?
Emerald, forest green, sage, mint, lime, olive green, jade, chalkboard, kelly green, neon green and green screen. The table below gives the five colours of each set as hex codes.
Can I use it as a video-call background?
Yes. Choose Video call background (16:9, 1920 × 1080), download the PNG or JPG and pick it as a virtual background in your video-call app.
What does the seed do?
It fixes where every smudge, cloud, blob and fibre goes, and where the checks and lines start. The same seed and size give exactly the same picture, pixel for pixel.
Is it free?
Yes. There is no sign-up, no watermark and no limit.
Is anything uploaded?
No. Every pixel is worked out by JavaScript in your browser. Nothing is sent anywhere or saved when you close the page.