Open BED files in your browser
Regions of a genome, one a line, as the UCSC Genome Browser reads them. Open a BED right here as a row for each region. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your features open as a row for each one, the first rows on show while the rest are read.
- A row for each feature • Place, length, strand and ID
- Sort and filter • Counts for every column
- Search • A gene by its name or ID
- Export • Save as CSV, Excel, JSON or Parquet
About BED
The UCSC Genome Browser made BED for the tracks people add to it, and it became the way to hand around regions of a genome: genes, peaks from ChIP-seq, the targets of an exome kit or the places a tool flagged. bedtools, IGV and most genomics tools read it.
Each line is a region split by tabs: its chromosome, start and end, counted from 0 so the end is just past it, then up to nine more fields, a name, a score, a strand, where it's drawn thick, a color and its blocks, like a gene's exons. Track and browser lines on top say how the Genome Browser draws it.
Filepeek reads the file in pieces in your browser and shows each region as a row with its chromosome, start, end, its length and every field it has, to sort, search and filter like any table. Show details names the track, and Export saves the rows as CSV, Excel, JSON or Parquet.
Browser Extensible Data
.bed
Format
- MIME type
- text/x-bed
- Made by
- The UCSC Genome Browser's team
Inside the file
- Each line
- Chromosome, start and end
- Then
- Name, score, strand, color and blocks
- Counted
- From 0, the end just past the region
- Markup
- Plain text
Opens in every browser
Filepeek opens BED files of any size in Chrome, Edge, Firefox and Safari, read in pieces so the first regions show at once. On their own, browsers download them or show them as text.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Apps that open BED
- WindowsNo app built in reads it • IGV shows it on the genome
- MacNo app built in reads it • IGV shows it on the genome
- iPhone and iPadNo app opens it
- AndroidNo app opens it
Questions
Why is my BED's start one less than in the Genome Browser?
BED counts from 0 and the Genome Browser shows places from 1, so a region the browser shows as chr1:101-200 is 100 to 200 in a BED. Its length is the end minus the start, which the Length column gives.
What's a bedGraph?
A BED whose track line says type=bedGraph, with a value for each region, like coverage or a signal, in its fourth column. Filepeek shows that column as Value, to sort by.
Is a PLINK .bed file the same?
No. PLINK's .bed holds genotypes in binary, read with its .bim and .fam. Filepeek tells them apart by what's inside, and shows what a binary one is.
Can I open a big BED file?
Yes. Filepeek reads it in pieces, so a file of millions of regions shows its first rows at once, and sorting and filtering run through all of it.