Is converting PostgreSQL backup to Postgres free?

Yes. Files up to 10MB convert free with no account. There is a limit of five conversions per day per IP address.

Will my PostgreSQL backup data keep its types in Postgres?

Yes — that is the point. Whole numbers, decimals, dates and booleans are mapped to real Postgres types rather than everything becoming text. The mapping table above shows exactly what you get.

Do you store my file?

No. The file is written to a temporary directory, converted, and the directory is deleted as soon as your download has been sent.

Convert PostgreSQL backup to Postgres

Upload a .backup or .dump file and get back a Postgres SQL script you can load straight into your database. Types are preserved rather than flattened to text. Free, no registration, up to 10MB.

1Upload your file

Click to upload or drag and drop

CSV, Excel, SQLite, SQL, DBF (max 10 MB)

2Choose target format

How your data is typed in Postgres

Generated from the converter's own Postgres type mapping — this is what it actually emits, not an example.

Your data	Postgres type
Whole number	BIGINT
Decimal (money)	NUMERIC(10,2)
Floating point	DOUBLE PRECISION
True / false	BOOLEAN
Date	DATE
Date and time	TIMESTAMP
Short text	TEXT
Long text	TEXT
Binary data	BYTEA

Working from a PostgreSQL backup

A PostgreSQL backup is not one thing. pg_dump can write plain SQL, a compressed custom-format archive or a tar archive, and all three routinely end up carrying the same .dump or .backup extension.

→The first five bytes decide: PGDMP means an archive, which is unpacked with pg_restore, and anything else is treated as plain SQL. The extension is never trusted for this.
→pg_restore is run with --file=- to print SQL to a pipe, so your backup is converted without ever being restored into a live PostgreSQL server: nothing connects to a database and nothing is created.
→The directory format, pg_dump -Fd, is a folder rather than a file and cannot be uploaded. Re-dump it as -Fc or as plain SQL.

The oldest PostgreSQL this loads into

Postgres is the informal spelling and the one most people type. Since the name says nothing about a version, the useful question for this page is which server releases the generated script runs on, and that is decided by the newest piece of syntax in it.

→The identity clause on auto-increment columns is the newest thing in the file, and it arrived in release 10. That is the floor for loading the script unedited.
→Everything else is far older: the hex escape the script uses for binary values has been accepted since 9.0, and jsonb, which is what a JSON column is declared as, since 9.4.
→On a server below the floor the script still loads if you delete the identity clauses by hand. The columns keep every value they were given, because each INSERT names them explicitly; they simply stop assigning new ones.

Reading PostgreSQL backup

→Reads pg_dump custom-format archives (.backup, .dump) — pgAdmin's default backup option — as well as plain SQL dumps.
→Data written as COPY blocks is read, not just INSERT statements. COPY is pg_dump's default, so a reader that only understands INSERT returns your tables with none of their rows.
→Primary keys declared by a later ALTER TABLE, which is how pg_dump writes them, are preserved.

Writing Postgres

→Backslashes are left alone, because PostgreSQL treats them as ordinary characters — doubling them would corrupt every Windows path.
→Auto-increment columns become GENERATED BY DEFAULT AS IDENTITY.
→Binary data is written as bytea, and identifiers respect the 63-character limit.

What you get

A ZIP containing dump.sql, plus a README with the exact command to load it. If anything about your data needed a judgement call, a _warnings.txt explains it.

Load this dump into PostgreSQL:

  psql -U USER -d DATABASE -f dump.sql

Create the database first if it does not exist:

  createdb -U USER DATABASE

Questions

Is converting PostgreSQL backup to Postgres free?: Yes. Files up to 10MB convert free with no account. There is a limit of five conversions per day per IP address.
Will my PostgreSQL backup data keep its types in Postgres?: Yes — that is the point. Whole numbers, decimals, dates and booleans are mapped to real Postgres types rather than everything becoming text. The mapping table above shows exactly what you get.
Do you store my file?: No. The file is written to a temporary directory, converted, and the directory is deleted as soon as your download has been sent.