How to Make a Year in Pixels Chart You Can Still Read

2026-10-14 · Yesterself

A year in pixels is one sheet with roughly 365 small squares on it. Twelve columns for the months, thirty-one rows for the days. Each evening you fill one square with a color that stands for how the day went. By December you have a picture of your year that takes two seconds to fill in and about a minute to read.

Most people who try this abandon it in March, and almost always for the same three reasons: the colors were too similar to tell apart, the legend stopped making sense by summer, or they tried to read the sheet day by day and found nothing there. All three are fixable before you draw the first square.

Build the grid

On paper. Use a dot grid or graph notebook, or a single loose sheet you can tape inside a cover. Draw twelve columns across the top and label them Jan through Dec. Down the left side, number 1 to 31. Make each square at least 6mm — around a quarter inch. Smaller squares look elegant and are miserable to fill with a marker without bleeding into the neighbor. Leave four or five blank rows under the grid; that is where the legend goes, and it needs to live on the same page.

February, April, June, September and November will have empty squares at the bottom. Cross them out lightly on day one so a blank there never reads as a day you missed.

In a spreadsheet. Put months in row 1, columns B through M. Put day numbers 1 through 31 in column A. Then select B2:M32 and shrink the column widths to about 25 pixels and the row heights to match, so the cells become squares rather than the wide rectangles a spreadsheet defaults to.

The filling method matters more than the layout. Do not color cells by hand with the fill bucket — you will not keep it up. Instead, type a single character in the cell (1 through 5, or a letter) and use conditional formatting to color it. Set five rules, one per value, each setting both the fill color and the font color to the same shade so the number disappears into the block. Now a day takes one keystroke, the sheet stays sortable, and you can count a color at year end with a COUNTIF instead of squinting.

Choosing five colors you can actually tell apart

Five is the number that works. Four collapses toward good and bad. Six or seven means you spend the fill deciding between two adjacent shades, and a decision that takes thirty seconds does not survive a tired Tuesday.

The trap is picking five colors from the same family — five blues, or a smooth rainbow gradient — because they look good on the page. Under a warm lamp at eleven at night, blue three and blue four are the same color, and in a scanned photo they are certainly the same color. Two rules keep this from happening:

• Vary lightness, not just hue. Line your five swatches up and photograph them in black and white. If any two turn the same gray, replace one. This also means the sheet stays readable if you are one of the many people who sees red and green as close cousins.
• Test them on the actual paper, at the actual size, with the actual pen. Fill five real squares. Look at them the next morning in daylight and again at night. Marker on thin paper shifts a lot between coats.

A set that survives both tests: deep navy, mid teal, pale yellow, warm orange, dark maroon. Five distinct lightness steps and no two neighbors that blur. Any five that pass the grayscale test will do.

Avoid a plain rainbow. Rainbow order feels intuitive and reads badly: green to yellow is a huge visual jump while red to orange is almost none, so your eye ranks the year wrong.

Write a legend you will still understand in November

This is the part people skip, and it is the reason so many old mood charts are unreadable a year later. "Good day" means nothing in retrospect. Good compared to what?

Write each label as a concrete, observable thing, in the present tense, at the bottom of the sheet:

1. Navy — I got through it and remember almost none of it.
2. Teal — Ordinary. Work happened, I ate, nothing stood out.
3. Yellow — Steady, and I did one thing I chose rather than owed.
4. Orange — I was glad to be awake for it.
5. Maroon — Something went badly wrong, and I want to remember which day.

Yours will be different. What matters is that a stranger — you, in eleven months — could apply your labels to a day and land on the same square you would have. Test that: write the legend, then fill in the last five days from memory. If two of them feel arbitrary, the labels are too vague.

Two more rules keep the legend honest. Do not renumber mid-year: if the categories feel wrong in March, note the change date in the margin and keep going, because a rescaled year is not comparable to itself. And resist adding a sixth color for one unusual week; write that week in words instead.

A grid is a record, not a readout. It cannot tell you whether something is wrong, and it is not a substitute for care. If a stretch of the sheet worries you, that is a reason to talk to a doctor or a licensed mental health professional, not to study the squares harder.

Read it by season, not by day

Here is the shift that makes the whole thing worth doing.

A single square carries almost no information. You already knew Tuesday was fine. Reading a year in pixels one day at a time is why people conclude it taught them nothing.

Instead, hold the sheet at arm's length and stop trying to read it. Let it blur. What you are looking for is texture over weeks:

• Blocks. Runs of one color lasting five days or more. These are the real units of a year. A three-week teal block in February is a fact about February, not about any Tuesday in it.
• Edges. The days where a block changes color. Those transitions are usually where something actually happened, and they are worth a note in the margin: a job started, someone visited, the clocks changed.
• Column shape. Compare whole months as columns. One column may be mottled — alternating light and dark day to day — while another is uniform. Mottled and uniform are different kinds of month, and neither is better.
• The parts you did not fill. Gaps cluster. A month with nine blanks is telling you something about your capacity that month, and it is worth more than the nine squares would have been.

Do this quarterly, not weekly. Four looks a year is enough, and looking too often makes you start filling squares to shape the picture rather than to record it.

One caution. Once you see a block, the temptation is to explain it, and the explanation will feel obvious and may be wrong. A dark February might be February, or it might be the month you were commuting an extra hour each way. The grid raises the question; it does not settle it.

That is the honest limit of any pixel chart. It compresses a day into one bit of color, which is why it is easy to keep up and why it cannot tell you much alone. The fix is cheap: keep a notebook next to the grid, and on any day you color an edge or an extreme, write two sentences about why. At year's end you have a shape and a handful of captions for it.

If you want those two sentences to come back to you rather than sit in a drawer, that is roughly what Yesterself is built for: each morning it hands you one letter drawn from your own past writing, and your evening reply becomes tomorrow's mail. It is not released yet, so the waiting list on the site is the only thing to join today. The grid, meanwhile, works on paper, alone, and you can start it tonight.

If you are new to tracking, read what to track first before committing a page to it, or tracking too many things if you already have three trackers running. One color per day is close to the smallest possible commitment. That is its whole advantage. Keep it that small.

Common questions

How many colors should a year in pixels use?

Five is the practical ceiling for most people. Fewer than four flattens the year into good and bad, and more than six means you stop trusting your own sorting and start guessing.

Should I make it on paper or in a spreadsheet?

Paper is faster to fill and pleasant to look at. A spreadsheet lets you sort and count later. Pick based on whether you want a picture at the end of the year or a set of numbers.

What do I do about a day I forgot to fill in?

Leave it blank. A blank square is honest data about how the month went, and chasing a perfect grid turns a five-second habit into a chore you drop.

Can a mood chart tell me if something is wrong?

No. A grid records what you marked, nothing more. If a pattern worries you, talk to a doctor or a licensed mental health professional rather than reading the sheet as a diagnosis.

What if my moods do not fit five categories?

They will not, and that is fine. The five colors are buckets for a rough daily sort, not a description of your inner life. Anything that needs more words belongs in a sentence next to the grid.